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src="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/DoorAnimation1.gif/220px-DoorAnimation1.gif" decoding="async" width="220" height="154" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/DoorAnimation1.gif/330px-DoorAnimation1.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/6/66/DoorAnimation1.gif 2x" data-file-width="416" data-file-height="292" /></a><figcaption>Animation of how a power lock system works (simple relay operation)</figcaption></figure> <p><b>Power door locks</b> (also known as electric door locks or <b>central locking</b>) allow the driver or front passenger to simultaneously lock or unlock all the doors of an <a href="/wiki/Automobile" class="mw-redirect" title="Automobile">automobile</a> or <a href="/wiki/Truck" title="Truck">truck</a>, by pressing a button or flipping a <a href="/wiki/Switch" title="Switch">switch</a>. </p><p>Power door locks were introduced on the luxury <a href="/wiki/Scripps-Booth" title="Scripps-Booth">Scripps-Booth</a> in 1914, but were not common on luxury cars until <a href="/wiki/Packard" title="Packard">Packard</a> reintroduced them in 1956. Nearly every car model today offers this feature as at least optional equipment. </p><p>Early systems locked and unlocked only the <a href="/wiki/Vehicle_door" class="mw-redirect" title="Vehicle door">car doors</a>. Many cars today also feature systems which can unlock such things as the <a href="/wiki/Luggage_compartment" class="mw-redirect" title="Luggage compartment">luggage compartment</a> or <a href="/wiki/Fuel_filler_cap" class="mw-redirect" title="Fuel filler cap">fuel filler cap</a> door. It is also common on modern cars for the locks to activate automatically when the car is put into gear or reaches a certain speed. </p> <div class="mw-heading mw-heading2"><h2 id="Remote_and_handsfree">Remote and handsfree</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Power_door_locks&action=edit&section=1" title="Edit section: Remote and handsfree"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Remote_central_locking.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Remote_central_locking.jpg/220px-Remote_central_locking.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Remote_central_locking.jpg/330px-Remote_central_locking.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Remote_central_locking.jpg/440px-Remote_central_locking.jpg 2x" data-file-width="2592" data-file-height="1944" /></a><figcaption>Pressing a button on the key unlocks all of the car doors. Another button locks the car.</figcaption></figure> <p>In 1980, <a href="/wiki/Ford_Motor_Company" title="Ford Motor Company">Ford Motor Company</a> introduced an <a href="/wiki/Combination_lock" title="Combination lock">external keypad</a>-type <a href="/wiki/Keyless_entry_system" class="mw-redirect" title="Keyless entry system">keyless entry system</a>, wherein the driver entered a numeric combination —either pre-programmed at the factory or one programmed by the owner— to unlock the car without the key. Early- to mid-1980s <a href="/wiki/Nissan_Maxima" title="Nissan Maxima">Nissan Maximas</a> could also be installed with a keypad, which would also retract the windows and moonroof once the car was successfully unlocked by pushing a specific button on the keypad. During the 1990s the <a href="/wiki/Subaru_Legacy" title="Subaru Legacy">Subaru Legacy</a> could also be opened by pulling the drivers external door handle a specific number of times to enter a passcode number that would unlock the driver's door only. </p><p>Today, many cars with power door locks also have a radio frequency <a href="/wiki/Remote_keyless_system" title="Remote keyless system">remote keyless system</a>, which allows a person to press a button on a <a href="/wiki/Remote_control" title="Remote control">remote control</a> key fob, the first being available on the French made <a href="/wiki/Renault_Fuego" title="Renault Fuego">Renault Fuego</a> in 1982.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Currently, many luxury makers also allow the windows to be opened or closed by pressing and holding a button on the remote control key fob, or by inserting the ignition key and holding it in the lock or unlock position in the external driver's door lock. </p><p>The remote locking system confirms successful locking and unlocking through either a light or a horn signal, and usually offers an option to switch easily between these two variants. Both provide almost the same functionality, though light signals are more discreet while horn signals might create a nuisance in residential neighborhoods and other busy parking areas (e.g. short-term parking lots). Some manufacturers offer the ability to adjust the horn signal volume. </p><p>Other cars have a proximity system that is triggered if a keylike <a href="/wiki/Transducer" title="Transducer">transducer</a> (<a href="/wiki/Advanced_Key" class="mw-redirect" title="Advanced Key">Advanced Key</a> or handsfree) is within a certain <a href="/wiki/Distance" title="Distance">distance</a> of the car. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Power_door_locks&action=edit&section=2" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Automobile_accessory_power" title="Automobile accessory power">Automobile accessory power</a></li> <li><a href="/wiki/Child_safety_lock" title="Child safety lock">Child safety lock</a></li> <li><a href="/wiki/List_of_auto_parts" title="List of auto parts">List of auto parts</a></li> <li><a href="/wiki/Power_window" title="Power window">Power window</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Power_door_locks&action=edit&section=3" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20121027091155/http://www.classicandperformancecar.com/front_website/octane_interact/carspecs.php/?see=3341">"1980-1985 RENAULT Fuego Turbo"</a>. <i>Octane</i>. Archived from <a rel="nofollow" class="external text" href="http://www.classicandperformancecar.com/front_website/octane_interact/carspecs.php/?see=3341">the original</a> on 27 October 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">27 February</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Octane&rft.atitle=1980-1985+RENAULT+Fuego+Turbo&rft_id=http%3A%2F%2Fwww.classicandperformancecar.com%2Ffront_website%2Foctane_interact%2Fcarspecs.php%2F%3Fsee%3D3341&rfr_id=info%3Asid%2Fen.wikipedia.org%3APower+door+locks" class="Z3988"></span></span> </li> </ol></div></div> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output 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]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Car-interior" title="Template:Car-interior"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Car-interior" title="Template talk:Car-interior"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Car-interior" title="Special:EditPage/Template:Car-interior"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Car_interior568" style="font-size:114%;margin:0 4em">Car interior</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div><i>Part of a series of articles on <a href="/wiki/Car" title="Car">cars</a></i></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Instruments</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Automotive_navigation_system" title="Automotive navigation system">Automotive navigation system</a></li> <li><a href="/wiki/Automotive_night_vision" title="Automotive night vision">Automotive night vision</a></li> <li><a href="/wiki/Backup_camera" title="Backup camera">Backup camera</a></li> <li><a href="/wiki/Blind_spot_monitor" title="Blind spot monitor">Blind spot monitor</a></li> <li><a href="/wiki/Boost_gauge" title="Boost gauge">Boost gauge</a></li> <li><a href="/wiki/Buzzer" title="Buzzer">Buzzer</a></li> <li><a href="/wiki/Carputer" title="Carputer">Carputer</a></li> <li><a href="/wiki/Check_engine_light" title="Check engine light">Check engine light</a></li> <li><a href="/wiki/Electronic_instrument_cluster" class="mw-redirect" title="Electronic instrument cluster">Electronic instrument cluster</a></li> <li><a href="/wiki/Fuel_gauge" title="Fuel gauge">Fuel gauge</a></li> <li><a href="/wiki/Automotive_head-up_display" title="Automotive head-up display">Head-up display</a></li> <li><a href="/wiki/Odometer" title="Odometer">Odometer</a></li> <li><a href="/wiki/Parking_sensor" title="Parking sensor">Parking sensor</a></li> <li><a href="/wiki/Radar_detector" title="Radar detector">Radar detector</a></li> <li><a href="/wiki/Speedometer" title="Speedometer">Speedometer</a></li> <li><a href="/wiki/Tachometer" title="Tachometer">Tachometer</a></li> <li><a href="/wiki/Telematics" title="Telematics">Telematics</a></li> <li><a href="/wiki/Tell-tale_(automotive)" title="Tell-tale (automotive)">Tell-tale</a></li> <li><a href="/wiki/Trip_computer" title="Trip computer">Trip computer</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Controls</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bowden_cable" title="Bowden cable">Bowden cable</a></li> <li><a href="/wiki/Brake" title="Brake">Brake</a></li> <li><a href="/wiki/Clutch" title="Clutch">Clutch</a></li> <li><a href="/wiki/Cruise_control" title="Cruise control">Cruise control</a></li> <li><a href="/wiki/Electronic_throttle_control" title="Electronic throttle control">Electronic throttle control</a></li> <li><a href="/wiki/Gear_stick" title="Gear stick">Gear stick</a></li> <li><a href="/wiki/Manettino_dial" title="Manettino dial">Manettino dial</a></li> <li><a href="/wiki/Parking_brake" title="Parking brake">Parking brake</a></li> <li><a href="/wiki/Power_steering" title="Power steering">Power steering</a></li> <li><a href="/wiki/Steering_wheel" title="Steering wheel">Steering wheel</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Anti-theft</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Car_alarm" title="Car alarm">Alarm</a></li> <li><a href="/wiki/Automatic_vehicle_location" title="Automatic vehicle location">Automatic vehicle location</a></li> <li><a href="/wiki/Immobiliser" title="Immobiliser">Immobiliser</a></li> <li><a class="mw-selflink selflink">Power door locks</a></li> <li><a href="/wiki/Remote_keyless_system" title="Remote keyless system">Remote keyless system</a></li> <li><a href="/wiki/Smart_key" title="Smart key">Smart key</a></li> <li><a href="/wiki/VIN_etching" title="VIN etching">VIN etching</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;"><div class="hlist"><ul><li><a href="/wiki/Automotive_safety" title="Automotive safety">Safety</a></li><li><a href="/wiki/Car_seat" title="Car seat">Seating</a></li></ul></div></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Airbag" title="Airbag">Airbag</a></li> <li><a href="/wiki/Armrest" title="Armrest">Armrest</a></li> <li><a href="/wiki/Bench_seat" title="Bench seat">Bench seat</a></li> <li><a href="/wiki/Bucket_seat" title="Bucket seat">Bucket seat</a></li> <li><a href="/wiki/Child_safety_lock" title="Child safety lock">Child safety lock</a></li> <li><a href="/wiki/Rear-view_mirror" title="Rear-view mirror">Rear-view mirror</a></li> <li><a href="/wiki/Rumble_seat" title="Rumble seat">Rumble seat</a></li> <li><a href="/wiki/Seat_belt" title="Seat belt">Seat belt</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Other elements</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Car_boot_liner" title="Car boot liner">Boot liner</a></li> <li><a href="/wiki/Center_console_(automobile)" title="Center console (automobile)">Center console</a></li> <li><a href="/wiki/Dashboard" title="Dashboard">Dashboard</a></li> <li><a href="/wiki/Glove_compartment" title="Glove compartment">Glove compartment</a></li> <li><a href="/wiki/Molded_carpet" title="Molded carpet">Molded carpet</a></li> <li><a href="/wiki/Sun_visor" title="Sun visor">Sun visor</a></li> <li><a href="/wiki/Vehicle_mat" title="Vehicle mat">Vehicle mat</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align:center;">Convenience</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Vehicle_audio" title="Vehicle audio">Audio</a></li> <li><a href="/wiki/Automobile_auxiliary_power_outlet" title="Automobile auxiliary power outlet">Automobile auxiliary power outlet</a></li> <li><a href="/wiki/Cup_holder" title="Cup holder">Cup holder</a></li> <li><a href="/wiki/Car_phone" title="Car phone">Car phone</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, 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title="Portal"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/16px-Symbol_portal_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/23px-Symbol_portal_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/31px-Symbol_portal_class.svg.png 2x" data-file-width="180" data-file-height="185" /></a></span> <a href="/wiki/Portal:Cars" title="Portal:Cars">Portal</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Locks,_locksmithing,_lock_picking,_and_security_alarms721" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Locksmithing" title="Template:Locksmithing"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Locksmithing" title="Template talk:Locksmithing"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Locksmithing" title="Special:EditPage/Template:Locksmithing"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Locks,_locksmithing,_lock_picking,_and_security_alarms721" style="font-size:114%;margin:0 4em"><a href="/wiki/Lock_and_key" title="Lock and key">Locks</a>, <a href="/wiki/Locksmithing" title="Locksmithing">locksmithing</a>, <a href="/wiki/Lock_picking" title="Lock picking">lock picking</a>, and <a href="/wiki/Security_alarm" title="Security alarm">security alarms</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Fundamental concepts</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Access_control" title="Access control">Access control</a></li> <li><a href="/wiki/Authentication" title="Authentication">Authentication</a></li> <li><a href="/wiki/Key_control" title="Key control">Key control</a></li> <li><a href="/wiki/Key_duplication" title="Key duplication">Key duplication</a></li> <li><a href="/wiki/Key_relevance" title="Key relevance">Key relevance</a></li> <li><a href="/wiki/Master_keying" title="Master keying">Master keying</a></li> <li><a href="/wiki/Password" title="Password">Password</a></li> <li><a href="/wiki/Physical_security" title="Physical security">Physical security</a></li> <li><a href="/wiki/Rekeying" title="Rekeying">Rekeying</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Lock hardware</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bitting_(key)" title="Bitting (key)">Bitting</a></li> <li><a href="/wiki/Interchangeable_core" title="Interchangeable core">Interchangeable core</a></li> <li><a href="/wiki/Key_blank" title="Key blank">Key blank</a></li> <li><a href="/wiki/Key_code" title="Key code">Key code</a></li> <li><a href="/wiki/Key_retainer" title="Key retainer">Key retainer</a></li> <li><a href="/wiki/Lockrod" title="Lockrod">Lockrod</a></li> <li><a href="/wiki/Lockset" title="Lockset">Lockset</a> <ul><li><a href="/wiki/Bored_cylindrical_lock" title="Bored cylindrical lock">Bored cylindrical lock</a></li> <li><a href="/wiki/Mortise_lock" title="Mortise lock">Mortise lock</a></li> <li><a href="/wiki/Rim_lock" title="Rim lock">Rim lock</a></li></ul></li> <li><a href="/wiki/Single-point_locking" title="Single-point locking">Single-point locking</a></li> <li><a href="/wiki/Three-point_locking" title="Three-point locking">Three-point locking</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Keys</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Berlin_key" title="Berlin key">Berlin key</a></li> <li><a href="/wiki/Car_key" title="Car key">Car key</a></li> <li><a href="/wiki/Keychain" title="Keychain">Keychain</a></li> <li><a href="/wiki/Skeleton_key" title="Skeleton key">Skeleton key</a></li> <li><a href="/wiki/Smart_key" title="Smart key">Smart key</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Mechanical locks</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Warded_lock" title="Warded lock">Warded lock</a></li> <li><a href="/wiki/Pin_tumbler_lock" title="Pin tumbler lock">Pin tumbler lock</a></li> <li><a href="/wiki/Disc_tumbler_lock" title="Disc tumbler lock">Disc tumbler lock</a></li> <li><a href="/wiki/Lever_tumbler_lock" title="Lever tumbler lock">Lever tumbler lock</a></li> <li><a href="/wiki/Magnetic_keyed_lock" title="Magnetic keyed lock">Magnetic keyed lock</a></li> <li><a href="/wiki/Padlock" title="Padlock">Padlock</a></li> <li><a href="/wiki/Combination_lock" title="Combination lock">Combination lock</a></li> <li><a href="/wiki/Rotary_combination_lock" title="Rotary combination lock">Rotary combination lock</a></li> <li><a href="/wiki/Time-delay_combination_locks" title="Time-delay combination locks">Time-delay combination locks</a></li> <li><a href="/wiki/Time_lock" title="Time lock">Time lock</a></li> <li><a href="/wiki/Tubular_pin_tumbler_lock" title="Tubular pin tumbler lock">Tubular pin tumbler lock</a></li> <li><a href="/wiki/Wafer_tumbler_lock" title="Wafer tumbler lock">Wafer tumbler lock</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Electronic locks</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Electromagnetic_lock" title="Electromagnetic lock">Electromagnetic lock</a></li> <li><a href="/wiki/Electronic_lock" title="Electronic lock">Electronic lock</a></li> <li><a href="/wiki/Electric_strike" title="Electric strike">Electric strike</a></li> <li><a href="/wiki/Keycard_lock" title="Keycard lock">Keycard lock</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other lock types</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bicycle_lock" title="Bicycle lock">Bicycle lock</a></li> <li><a href="/wiki/Bramah_lock" title="Bramah lock">Bramah lock</a></li> <li><a href="/wiki/Chubb_detector_lock" title="Chubb detector lock">Chubb detector lock</a></li> <li><a href="/wiki/Child_safety_lock" title="Child safety lock">Child safety lock</a></li> <li><a href="/wiki/Kensington_Security_Slot" title="Kensington Security Slot">Kensington Security Slot</a></li> <li><a href="/wiki/Latch" title="Latch">Latch</a></li> <li><a href="/wiki/Luggage_lock" title="Luggage lock">Luggage lock</a></li> <li><a class="mw-selflink selflink">Power door locks</a></li> <li><a href="/wiki/Protector_lock" title="Protector lock">Protector lock</a></li> <li><a href="/wiki/Real-estate_lock_box" title="Real-estate lock box">Real-estate lock box</a></li> <li><a href="/wiki/Steering-wheel_lock" title="Steering-wheel lock">Steering-wheel lock</a></li> <li><a href="/wiki/The_Club_(automotive)" title="The Club (automotive)">The Club</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Lock_picking" title="Lock picking">Lock picking</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Lock_bumping" title="Lock bumping">Lock bumping</a></li> <li><a href="/wiki/Locksport" title="Locksport">Locksport</a></li> <li><a href="/wiki/Slim_jim_(lock_pick)" title="Slim jim (lock pick)">Slim Jim</a></li> <li><a href="/wiki/Snap_gun" title="Snap gun">Snap gun</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Door" title="Door">Door hardware</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dead_bolt" class="mw-redirect" title="Dead bolt">Dead bolt</a></li> <li><a href="/wiki/Door_chain" title="Door chain">Door chain</a></li> <li><a href="/wiki/Door_closer" title="Door closer">Door closer</a></li> <li><a href="/wiki/Door_furniture" title="Door furniture">Door furniture</a></li> <li><a href="/wiki/Door_security" title="Door security">Door security</a></li> <li><a href="/wiki/Doorknob" class="mw-redirect" title="Doorknob">Doorknob</a></li> <li><a href="/wiki/Doorstop" title="Doorstop">Doorstop</a></li> <li><a href="/wiki/Hinge" title="Hinge">Hinge</a></li> <li><a href="/wiki/Night_latch" title="Night latch">Night latch</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Emergency access/exit</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Crash_bar" title="Crash bar">Crash bar</a></li> <li><a href="/wiki/Electromagnetic_door_holder" title="Electromagnetic door holder">Electromagnetic door holder</a></li> <li><a href="/wiki/Emergency_exit" title="Emergency exit">Emergency exit</a></li> <li><a href="/wiki/Emergency_light" title="Emergency light">Emergency light</a></li> <li><a href="/wiki/Exit_control_lock" title="Exit control lock">Exit control lock</a></li> <li><a href="/wiki/Exit_sign" title="Exit sign">Exit sign</a></li> <li><a href="/wiki/Knox_Box" title="Knox Box">Knox Box</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Security_alarm" title="Security alarm">Security alarms</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alarm_device" title="Alarm device">Alarm device</a></li> <li><a href="/wiki/Alarm_monitoring_center" title="Alarm monitoring center">Alarm monitoring center</a></li> <li><a href="/wiki/Car_alarm" title="Car alarm">Car alarm</a></li> <li><a href="/wiki/Card_reader" title="Card reader">Card reader</a></li> <li><a href="/wiki/Closed-circuit_television" title="Closed-circuit television">Closed-circuit television</a></li> <li><a href="/wiki/Door_loop" title="Door loop">Door loop</a></li> <li><a href="/wiki/Dual_loop" title="Dual loop">Dual loop</a></li> <li><a href="/wiki/Fingerprint_scanner" title="Fingerprint scanner">Fingerprint scanner</a></li> <li><a href="/wiki/Glass_break_detector" title="Glass break detector">Glass break detector</a></li> <li><a href="/wiki/Heat_detector" title="Heat detector">Heat detector</a></li> <li><a href="/wiki/Key_switch" title="Key switch">Key switch</a></li> <li><a href="/wiki/Keypad" title="Keypad">Keypad</a></li> <li><a href="/wiki/Miniature_snap-action_switch" title="Miniature snap-action switch">Miniature snap-action switch</a></li> <li><a href="/wiki/Motion_detector" title="Motion detector">Motion detector</a></li> <li><a href="/wiki/Occupancy_sensor" title="Occupancy sensor">Occupancy sensor</a></li> <li><a href="/wiki/Passive_infrared_sensor" title="Passive infrared sensor">Passive infrared sensor</a> (PIR)</li> <li><a href="/wiki/Perimeter_intrusion_detection" title="Perimeter intrusion detection">Perimeter intrusion detection</a></li> <li><a href="/wiki/Photoelectric_sensor" title="Photoelectric sensor">Photoelectric sensor</a></li> <li><a href="/wiki/Piezo_switch" title="Piezo switch">Piezo switch</a></li> <li><a href="/wiki/Pressure_switch" title="Pressure switch">Pressure switch</a></li> <li><a href="/wiki/Proximity_card" title="Proximity card">Proximity card</a></li> <li><a href="/wiki/Reed_switch" title="Reed switch">Reed switch</a></li> <li><a href="/wiki/Tripwire" title="Tripwire">Tripwire</a></li> <li><a href="/wiki/Ultrasonic_transducer" title="Ultrasonic transducer">Ultrasonic transducer</a></li> <li><a href="/wiki/Vandal-resistant_switch" title="Vandal-resistant switch">Vandal-resistant switch</a></li> <li><a href="/wiki/Water_detector" title="Water detector">Water detector</a></li> <li><a href="/wiki/Window_security" title="Window security">Window security</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Miscellaneous</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Glossary_of_locksmithing_terms" title="Glossary of locksmithing terms">Glossary of locksmithing terms</a></li> <li><a href="/wiki/John_M._Mossman_Lock_Museum" title="John M. Mossman Lock Museum">John M. Mossman Lock Museum</a></li> <li><a href="/wiki/Key_to_the_City" class="mw-redirect" title="Key to the City">Key to the City</a></li> <li><a href="/wiki/Lock_Museum" title="Lock Museum">Lock Museum</a></li> <li><a href="/wiki/Lock_Museum_of_America" title="Lock Museum of America">Lock Museum of America</a></li> <li><a href="/wiki/Mus%C3%A9e_de_la_Serrure" title="Musée de la Serrure">Musée de la Serrure</a></li> <li><a href="/wiki/Puzzle_lock" title="Puzzle lock">Puzzle lock</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Locksmithing" title="Category:Locksmithing">Category:Locksmithing</a></li> <li><b><span class="noviewer" typeof="mw:File"><span title="Commons page"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span> <a href="https://commons.wikimedia.org/wiki/Category:Keys" class="extiw" title="commons:Category:Keys">Keys</a></b></li> <li><b><span class="noviewer" typeof="mw:File"><span title="Commons page"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span> <a href="https://commons.wikimedia.org/wiki/Category:Locks_(security_devices)" class="extiw" title="commons:Category:Locks (security devices)">Locks</a></b></li> <li><b><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Wikibooks-logo.svg" class="mw-file-description" title="Wikibooks page"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/16px-Wikibooks-logo.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/24px-Wikibooks-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/32px-Wikibooks-logo.svg.png 2x" data-file-width="300" data-file-height="300" /></a></span> <a href="https://en.wikibooks.org/wiki/Locksmithing" class="extiw" title="wikibooks:Locksmithing">Book</a></b></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; 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