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54.34 c -0.078 0 -0.145 0 -0.224 0 l 0.034 -0.168 c -2.483 0 -4.508 -2.025 -4.508 -4.508 s 2.025 -4.508 4.508 -4.508 s 4.508 2.025 4.508 4.508 C 59.955 52.148 58.02 54.239 55.537 54.34 z" style="stroke: none; stroke-width: 1; stroke-dasharray: none; stroke-linecap: butt; stroke-linejoin: miter; stroke-miterlimit: 10; fill: #25a1de; fill-rule: nonzero; opacity: 1;" transform=" matrix(1 0 0 1 0 0) " stroke-linecap="round" /></g></svg></a><script>try{tlite.enable(document.getElementById('share-reddit'),{text:"<div style='font-size:120%'>Share on reddit:<\/div>GAIA A08 - Open Source Air Quality Monitor | Compact & Hackable Air Quality Monitoring Station<br>(https:\/\/aqicn.org\/gaia\/a08\/)"});}catch(e){}</script></div><style>.ui-share-btns { display: block; margin: 0; vertical-align: middle; } .ui-share-btns svg { height: 20px; vertical-align: middle; fill: white; } .ui-share-btn { background-color: #25a1de; color: rgba(255, 255, 255, .8); font-size: 15px; line-height: 20px; display: inline-block; text-align: center; border: 1px solid #0086c8; cursor: pointer; border-radius: 4px; padding: 3px 5px; margin: 3px; max-width: 800px; min-width: 30px; } .ui-share-btn:first-child { margin-left: 0px; } .ui-share-btn:hover { background-color: #f8f8f8; border-color: #adadad; text-decoration: none; color: black; } .ui-share-btn:hover svg { fill: black; } .ui-share-btn:hover svg g { fill: black; } .ui-share-btn a:hover { text-decoration: none; }</style><i style='color:#888;font-size:13px;word-break: break-all;'>Share: <a href='https://aqicn.org/gaia/a08/'>aqicn.org/gaia/a08/</a></i><br></div><div style='clear:both;margin-bottom:10px;'></div> <link href='/jscripts/fomantic-ui-2.9.3/dist/semantic.min.css?_=20250116.195014&type=css' rel='stylesheet'/> <link href='/jscripts/fomantic-ui-2.9.3/dist/semantic.min.css?_=20250116.195014&type=css' rel='stylesheet'/> <div id='gaia-invoice-reminder' class='ui raised floating icon message' style='overflow-x:scroll;display:none'> <i class="close icon" id='gaia-invoice-close'></i> <i class="receipt icon"></i> <div class="content"> <div class="header"> Your GAIA invoice is available from this link </div> <a id='gaia-invoice-reminder-url'></a> </div> </div> <script> function checkInvoice() { var model = store.get("gaia-invoice"); if (!model || !model.url) return; var a = document.getElementById("gaia-invoice-reminder-url"); a.innerText = model.url; a.href = model.url; var d = document.getElementById("gaia-invoice-reminder"); d.style.display = ''; document.getElementById("gaia-invoice-close").addEventListener("click",function() { d.style.display = 'none'; }); } try { checkInvoice(); } catch (e) { console.error("!", e) } </script><style type='text/css'>section {margin-top:20px;margin-bottom: 80px;}@media only screen and (max-width: 800px) { border-top: 1px solid #ccc;}@media only screen and (min-width: 800px) { section {padding-left: 20px;border-left: 3px solid #f8f8f8;}}</style><h2><p>Overview</p></h2><section><div style='width: 420px;float:right;max-width: 50%;'> <center><b style='font-size:2em; line-height:1; font-variant: small-caps'>Gaia A08</b></center> <br> <img style='width:80%;' src='/air/view/gaia/images/gaia-a08-product-02.png'> <div style='text-align:center'> Dimensions: 50 * 47 * 30 mm <br> Weight: 180g </div> </div> <p> The GAIA A08 is a compact and open-source air quality monitoring station that is ideal for indoor or outdoor use. </p> <ul> <li><span>Air Quality Particulate Matter Sensors:</span> 1x <a href='/air/sensor/spec/pms5003-english-v2.3.pdf'>PMS 5003</a> <span>(possible to connect up to two PMS sensors)</span> <li><span>Meteorological Sensors:</span> <a href='/air/sensor/spec/asair-aht20.pdf'>ASAIR AHT-20</a> <li>RGB led for real-time visual Air Pollution indication.</li> <li>Connectivity via WIFI, with an internal flex antenna.</li> </ul> <p> The GAIA A08 is suitable for indoor and outdoor air quality monitoring. The RGB LED provides immediate feedback on indoor air quality, and its mechanical structure ensures rain-proof operation when used outdoors. </p> <p> The GAIA A08 station is compact, easy to install and comes with accessories. </p> <ul> <li>Power Supply: USB 5V/1A power adapter.</li> <li>Power Cable: 1 meter USB cable.</li> <li>Fixation straps and screws.</li> </ul> <p> The GAIA A08 is preloaded with the plug'n'play aqicn.org software: So you can just plug the power and the device will automatically report the data on to our maps. You will get access to our internal dashboard where you can check the real-time and historical data, as well as update the device coordinates on the map. </p> </section><h2><p>Open Source</p></h2><section><p> For those who want to develop their own custom software, the GAIA 08 comes with open-source Arduino-compatible software, available at <a href='https://github.com/aqicn/gaia-a08-arduino' target=_github>https://github.com/aqicn/gaia-a08-arduino</a>. </p> <p i18n:no> The GAIA A08 allows you to flash your own firmware just by using the USB cable. And you can always reflash the original aqicn.org software (<a href='https://firmware.aqicn.org/gaia/updater/#/en/a08' target=fota>firmware.aqicn.org/gaia/updater</a>) </p> <div style='width: 320px;float:right;max-width: 50%;float:right;'> <div style='text-align:center'> Gaia 08 Mechanics </div> <img style='width:100%;' src='/air/view/gaia/images/gaia-a08-mech.png'> </div> <div style='width: 320px;float:right;max-width: 50%;float:right;'> <div style='text-align:center'> Gaia 08 PCB </div> <img style='width:100%;' src='/air/view/gaia/images/gaia-a08-pcb.png'> </div> <p> The CPU is an Espressif <a href='https://www.espressif.com/en/products/socs/esp32-c3'>ESP32-C3</a> with 4MB of Flash. The hardware mother board comes with an extension connection which provides means to connect external sensors (one free GPIO, two TX/RX GPIOSs, two 3.3V and 5V power and ground are available). </p> <p> Flashing and console monitoring can be done via the USB port, meaning you do not need any additional serial TTL adapter. </p> <p> The ready-to-use <a href='https://github.com/aqicn/gaia-a08-arduino' target=_github>arduino software</a> allows uploading the GAIA 08 real-time data onto the aqicn.org and waqi.info maps. </p> </section><h2><p>Package Content</p></h2><section><p> GAIA 08 Items included for 50€ </p> <img src='/air/view/gaia/images/gaia-a08-package.jpg' style='max-width:800px;width:100%;'> </section><h2><p>GAIA A08 Product Cost</p></h2><section></section><div id='cart'></div> <script>var gaiaCartProducts = [{"id":"GAIA-A08","name":"GAIA A08","description":"Base GAIA A08 product with one PM2.5\/PM10 sensor, mounting hook, 0.5 meter cable and USB power supply","price":4900,"currency":"EUR","category":["A08"]},{"id":"A08-CO2-SCD41","name":"upgrade: extra CO2 sensor","description":"Add an extra Sensiron SCD41 CO2 sensor.","purpose":"This setup is ideal for indoor use.","price":3900,"currency":"EUR","category":["A08"]},{"id":"A08-DUAL-PMS","name":"upgrade: dual PM sensor","description":"Add an extra PM2.5\/PM10 sensor.","purpose":"This setup is ideal for outdoor use.","price":3900,"currency":"EUR","category":["A08"]},{"id":"5M-USB","name":"upgrade: 5m USB cable","description":"Add an extra 5-meter USB cable, ideal for outdoor use (power only, no data)","price":900,"currency":"EUR","category":["A08"]},{"id":"10M-USB","name":"upgrade: 10m USB cable","description":"Add an extra 10-meter USB cable, ideal for outdoor use (power only, no data)","price":1200,"currency":"EUR","category":["A08"]}];</script><style>div.CartView{font-size:15px}div.CartSummary{margin-top:20px}div.CartSummary tr td:not(:first-child),div.CartSummary tr th:not(:first-child){text-align:center}div.CartSummary tr td b{font-size:120%}@media screen and (max-width:800px){.CartView .ui.cards>.card{box-sizing:border-box;margin:5px;width:calc(33% - 15px)}}@media screen and (max-width:600px){.CartView .ui.cards>.card{box-sizing:border-box;margin:5px;width:calc(50% - 10px)}}@media screen and (max-width:400px){.CartView .ui.cards>.card{margin:.25em .5em;width:100%}} /*# sourceMappingURL=main.8aca644c.css.map*/</style><script src='https://aqicn.org/air-cache/gaia/dist/cart.min.js?_=20250201.181008' type='text/javascript'></script><script>aqi18n.register("Add to cart","Add to cart");</script><script>aqi18n.register("Shipment","Shipment");</script><script>aqi18n.register("Please confirm your delivery address and phone number","Please confirm your delivery address and phone number");</script><script>aqi18n.register("Delivery Address","Delivery Address");</script><script>aqi18n.register("Country","Country");</script><script>aqi18n.register("Name","Name");</script><script>aqi18n.register("Email Address","Email Address");</script><script>aqi18n.register("Phone Number","Phone Number");</script><script>aqi18n.register("Ok, continue to the summary","Ok, continue to the summary");</script><script>aqi18n.register("cancel","cancel");</script><script>aqi18n.register("Confirm your choice","Confirm your choice");</script><script>aqi18n.register("Item","Item");</script><script>aqi18n.register("Price","Price");</script><script>aqi18n.register("Quantity","Quantity");</script><script>aqi18n.register("Total","Total");</script><script>aqi18n.register("Line Price","Line Price");</script><script>aqi18n.register("The cost of shipping is not yet known. It will be updated later","The cost of shipping is not yet known. It will be updated later");</script><script>gaiaCartInit("cart","A08");</script><center><br>-<svg xmlns="http://www.w3.org/2000/svg" width="28" height="28" version="1" viewBox="0 0 26 26" enable-background="new 0 0 26 26"><path d="M 15.65625 -0.03125 C 14.280846 -0.03760636 12.828752 0.09254274 11.3125 0.40625 C 8.28651 1.0323169 5.7746616 2.1709106 3.96875 3.59375 C 2.3885774 4.8387345 1.3097647 6.3321654 1.0625 7.96875 A 1.0001 1.0001 0 0 0 1 8.40625 C 1 8.4709766 0.99753847 8.5296394 1 8.59375 C 0.99939321 8.6245955 1 8.6565744 1 8.6875 C 1.0067678 8.8049913 1.0164368 8.9159604 1.03125 9.03125 C 1.0536237 9.2185949 1.1014372 9.4156735 1.15625 9.59375 C 1.4590854 10.826485 2.2046296 11.91918 3.21875 12.78125 C 4.0779092 13.511593 5.1369309 14.083861 6.3125 14.53125 A 1.0001 1.0001 0 0 0 6.53125 14.9375 C 8.1339345 16.910035 12.101162 19.118434 18.1875 18.59375 A 1.0043849 1.0043849 0 0 0 18 16.59375 C 14.906411 16.860439 12.500325 16.269357 10.78125 15.5 C 14.30154 15.772761 18.245209 15.070028 21.71875 12.96875 A 1.0021949 1.0021949 0 1 0 20.6875 11.25 C 16.887924 13.548509 12.317006 14.000584 8.78125 13.21875 C 8.6725971 13.194724 8.5753958 13.151278 8.46875 13.125 C 10.108287 13.189898 11.88322 13.060799 13.6875 12.6875 C 16.718701 12.060355 19.36029 10.886006 21.21875 9.4375 C 23.067114 7.9968631 24.272087 6.1533076 23.875 4.21875 C 23.8732 4.20861 23.8769 4.197602 23.875 4.1875 C 23.513143 2.2541955 21.685558 1.0369822 19.4375 0.4375 C 18.307598 0.13619269 17.031654 -0.02489364 15.65625 -0.03125 z M 15.65625 1.96875 C 16.883971 1.97489 18.004902 2.1263073 18.9375 2.375 C 20.802695 2.8723854 21.754612 3.7133252 21.90625 4.5625 A 1.0001 1.0001 0 0 0 21.9375 4.625 C 22.12047 5.4788616 21.54154 6.6735055 20 7.875 C 18.45846 9.0764945 16.081299 10.145895 13.3125 10.71875 C 10.546306 11.291066 7.7660826 11.269646 5.8125 10.78125 C 4.8357087 10.537052 4.0847823 10.157122 3.625 9.78125 C 3.3682882 9.5713881 3.1893221 9.3858538 3.09375 9.1875 C 3.0413411 8.9743851 3.0082478 8.7545393 3 8.53125 C 3.0633474 7.4789308 3.7648202 6.2771492 5.1875 5.15625 C 6.6815884 3.9790894 8.91349 2.9489331 11.6875 2.375 C 13.071248 2.0887073 14.428529 1.9626064 15.65625 1.96875 z M 15.96875 3.65625 C 14.93792 3.617106 13.843984 3.69192 12.71875 3.90625 A 1.0001 1.0001 0 0 0 12.6875 3.9375 C 9.8940815 4.582135 7.6159262 5.8506824 6.5625 7.5625 A 1.0001 1.0001 0 1 0 8.25 8.625 C 8.7942179 7.740646 10.701734 6.434394 13.09375 5.875 C 13.10453 5.87295 13.11421 5.87702 13.125 5.875 C 15.064267 5.5112859 17.031887 5.6468794 18.03125 6.03125 A 1.0040202 1.0040202 0 0 0 18.75 4.15625 C 17.952461 3.8495042 16.99958 3.6953943 15.96875 3.65625 z M 9.15625 17.59375 A 1.0001 1.0001 0 0 0 8.5625 19.25 C 8.5625 19.25 11.033033 22.015963 15.53125 21.90625 A 1.0004882 1.0004882 0 1 0 15.46875 19.90625 C 11.766967 19.996537 10.0625 17.9375 10.0625 17.9375 A 1.0001 1.0001 0 0 0 9.15625 17.59375 z M 8.125 20.1875 A 1.0001 1.0001 0 0 0 7.40625 21.65625 C 7.40625 21.65625 8.6869767 23.974979 11.65625 24.09375 A 1.001098 1.001098 0 0 0 11.75 22.09375 C 9.7192733 22.012521 9.1875 20.75 9.1875 20.75 A 1.0001 1.0001 0 0 0 8.21875 20.1875 A 1.0001 1.0001 0 0 0 8.125 20.1875 z M 7.59375 23.0625 A 1.0001 1.0001 0 0 0 7.4375 23.09375 A 1.0001 1.0001 0 0 0 6.9375 23.34375 C 6.9375 23.34375 6.19375 24 5.09375 24 A 1.0001 1.0001 0 1 0 5.09375 26 C 6.99375 26 8.28125 24.84375 8.28125 24.84375 A 1.0001 1.0001 0 0 0 7.59375 23.0625 z" color="#000" ></path></svg>-<br><br></center> <center> <a href='/gaia/'> <div class='ui btn' style='white-space: break-spaces;font-size:1em;color:black;'> Back to the GAIA Air Quality Monitoring station page </div> </a> </center> <br><br></div></div></div><script src='https://aqicn.org/air-cache/gaia/dist/cart.js?_=20250212.174141' type='text/javascript'></script><a name="infoaqi"></a><div class='h1section h1section-divider'><div class='h1section-rainbow'><div></div><div></div><div></div><div></div><div></div></div><h1><div id='h1header3' style='padding:2px;font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;;'>About the Air Quality and Pollution Measurement:</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header3',.88,{maxfs:45}); }; </script><div class='whitebody' style='font-family:"Noto Serif",Cambria,"Palatino Linotype","Book Antiqua","URW Palladio L",serif;'><div class='section-outer'><div class='section-content' > <center>About the Air Quality Levels<br> <br> <style type="text/css"> #legend-full table.infoaqitable { line-height: 1.5; background-color: white; max-width: 1000px; width: 95%; margin: 0px; border: 1px solid black; cursor: pointer; } #legend-full table.infoaqitable td { padding: 5px; font-size: 15px; text-shadow: none; } #legend-full .aqiwtxt { color: #ffffff; } #legend-full .aqibtxt { color: #000000; } @media only screen and (max-width: 800px) { #legend-full table.infoaqitable { width: 98%; } } @media only screen and (max-width: 800px) { #legend-full table.infoaqitable td { display: block; } #legend-full table.infoaqitable td:nth-child(1) { display: inline-block; font-size: 1.2em; } #legend-full table.infoaqitable td:nth-child(2) { display: inline-block; font-weight: 800; font-size: 1.2em; } } </style> <div id='legend-full' onclick='window.location="/scale/"'> <table class="infoaqitable cautionary"> <thead> <tr> <td>AQI</td> <td>Air Pollution Level</td> <td>Health Implications</td> <td>Cautionary Statement (for PM2.5)</td> </tr> </thead> <tr style="background-color:#009966;"> <td class='aqiwtxt' nowrap="true">0 - 50</td> <td class='aqiwtxt'>Good</td> <td class='aqiwtxt'>Air quality is considered satisfactory, and air pollution poses little or no risk</td> <td class='aqiwtxt'>None</td> </tr> <tr style="background-color:#ffde33" class='aqibtxt'> <td class='aqibtxt' nowrap="true">51 -100</td> <td class='aqibtxt'>Moderate</td> <td class='aqibtxt'>Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.</td> <td class='aqibtxt'>Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.</td> </tr> <tr style="background-color:#ff9933;"> <td class='aqibtxt' nowrap="true">101-150</td> <td class='aqibtxt'>Unhealthy for Sensitive Groups</td> <td class='aqibtxt'>Members of sensitive groups may experience health effects. The general public is not likely to be affected.</td> <td class='aqibtxt'>Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.</td> </tr> <tr style="background-color:#cc0033;"> <td class='aqiwtxt' nowrap="true">151-200</td> <td class='aqiwtxt'>Unhealthy</td> <td class='aqiwtxt'>Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects</td> <td class='aqiwtxt'>Active children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion</td> </tr> <tr style="background-color:#660099;"> <td class='aqiwtxt' nowrap="true">201-300</td> <td class='aqiwtxt'>Very Unhealthy</td> <td class='aqiwtxt'>Health warnings of emergency conditions. The entire population is more likely to be affected.</td> <td class='aqiwtxt'>Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion.</td> </tr> <tr style="background-color:#7e0023;"> <td class='aqiwtxt' nowrap="true">300+</td> <td class='aqiwtxt'>Hazardous</td> <td class='aqiwtxt'>Health alert: everyone may experience more serious health effects</td> <td class='aqiwtxt'>Everyone should avoid all outdoor exertion</td> </tr> </table></div><br>To know more about Air Quality and Pollution, check the <a href='http://en.wikipedia.org/wiki/Air_quality'>wikipedia Air Quality topic</a> or the <a href='http://www.airnow.gov/index.cfm?action=aqibasics.aqi'>airnow guide to Air Quality and Your Health</a>.<br><br>For very useful health advices of Beijing Doctor Richard Saint Cyr MD, check <a href='http://www.myhealthbeijing.com/'>www.myhealthbeijing.com</a> blog.<br><br></center></div></div></div> <center> <br>  <ins></ins> <script></script> <style type='text/css'> .usage-notice { line-height:1.5; max-width:95%; width:1000px; margin-top:10px; padding:5px; font-size: 15px; background-color:#ffffff; text-shadow: 1px 1px 1px white; -webkit-box-shadow: 1px 1px 8px -3px rgba(0,0,0,0.3); } </style> <div class="textshadowwhite usage-notice" style=''> <b>Usage Notice</b>: All the Air Quality data are unvalidated at the time of publication, and due to quality assurance these data may be amended, without notice, at any time. 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