{"id":313,"date":"2025-11-20T19:51:30","date_gmt":"2025-11-20T19:51:30","guid":{"rendered":"https:\/\/hamtechtechnologies.com\/index.php\/product\/mq-7-co-sensor\/"},"modified":"2025-11-30T16:37:00","modified_gmt":"2025-11-30T16:37:00","slug":"mq-7-co-sensor","status":"publish","type":"product","link":"https:\/\/hamtechtechnologies.com\/index.php\/product\/mq-7-co-sensor\/","title":{"rendered":"MQ-7 CO Sensor"},"content":{"rendered":"<p data-start=\"260\" data-end=\"814\">The MQ-7 CO Gas Sensor is a high-sensitivity module designed to detect carbon monoxide levels in the air. It features both analog and digital outputs, making it easy to interface with Arduino, ESP32, and Raspberry Pi.<br data-start=\"477\" data-end=\"480\" \/>The sensor uses a built-in heating element with a cycling method (low and high temperature) for accurate CO detection. It includes an onboard potentiometer for threshold adjustment and an LED indicator for digital alerts.<br data-start=\"701\" data-end=\"704\" \/>Commonly used in home CO detectors, industrial safety alarms, and IoT-based environmental monitoring projects.<\/p>\n<hr data-start=\"816\" data-end=\"819\" \/>\n<h3 data-start=\"821\" data-end=\"841\"><strong data-start=\"825\" data-end=\"841\">Key Features<\/strong><\/h3>\n<ul data-start=\"843\" data-end=\"1133\">\n<li data-start=\"843\" data-end=\"873\">\n<p data-start=\"845\" data-end=\"873\">Detects carbon monoxide (CO)<\/p>\n<\/li>\n<li data-start=\"874\" data-end=\"909\">\n<p data-start=\"876\" data-end=\"909\">Analog and digital output options<\/p>\n<\/li>\n<li data-start=\"910\" data-end=\"960\">\n<p data-start=\"912\" data-end=\"960\">Adjustable sensitivity via onboard potentiometer<\/p>\n<\/li>\n<li data-start=\"961\" data-end=\"999\">\n<p data-start=\"963\" data-end=\"999\">Digital LED indicator for gas alerts<\/p>\n<\/li>\n<li data-start=\"1000\" data-end=\"1041\">\n<p data-start=\"1002\" data-end=\"1041\">High sensitivity and fast response time<\/p>\n<\/li>\n<li data-start=\"1042\" data-end=\"1088\">\n<p data-start=\"1044\" data-end=\"1088\">Compatible with Arduino, ESP32, Raspberry Pi<\/p>\n<\/li>\n<li data-start=\"1089\" data-end=\"1133\">\n<p data-start=\"1091\" data-end=\"1133\">Long service life and reliable performance<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"1135\" data-end=\"1138\" \/>\n<h3 data-start=\"1140\" data-end=\"1162\"><strong data-start=\"1144\" data-end=\"1162\">Specifications<\/strong><\/h3>\n<div class=\"_tableContainer_1rjym_1\">\n<div class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"1164\" data-end=\"1527\">\n<thead data-start=\"1164\" data-end=\"1185\">\n<tr data-start=\"1164\" data-end=\"1185\">\n<th data-start=\"1164\" data-end=\"1174\" data-col-size=\"sm\">Feature<\/th>\n<th data-start=\"1174\" data-end=\"1185\" data-col-size=\"sm\">Details<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"1207\" data-end=\"1527\">\n<tr data-start=\"1207\" data-end=\"1236\">\n<td data-start=\"1207\" data-end=\"1227\" data-col-size=\"sm\">Operating Voltage<\/td>\n<td data-start=\"1227\" data-end=\"1236\" data-col-size=\"sm\">5V DC<\/td>\n<\/tr>\n<tr data-start=\"1237\" data-end=\"1275\">\n<td data-start=\"1237\" data-end=\"1255\" data-col-size=\"sm\">Detection Range<\/td>\n<td data-start=\"1255\" data-end=\"1275\" data-col-size=\"sm\">10\u201310,000 ppm CO<\/td>\n<\/tr>\n<tr data-start=\"1276\" data-end=\"1321\">\n<td data-start=\"1276\" data-end=\"1285\" data-col-size=\"sm\">Output<\/td>\n<td data-start=\"1285\" data-end=\"1321\" data-col-size=\"sm\">Analog voltage, Digital HIGH\/LOW<\/td>\n<\/tr>\n<tr data-start=\"1322\" data-end=\"1375\">\n<td data-start=\"1322\" data-end=\"1345\" data-col-size=\"sm\">Heater Voltage Cycle<\/td>\n<td data-start=\"1345\" data-end=\"1375\" data-col-size=\"sm\">1.5V (90 sec), 5V (60 sec)<\/td>\n<\/tr>\n<tr data-start=\"1376\" data-end=\"1418\">\n<td data-start=\"1376\" data-end=\"1391\" data-col-size=\"sm\">Preheat Time<\/td>\n<td data-start=\"1391\" data-end=\"1418\" data-col-size=\"sm\">24\u201348 hours (first use)<\/td>\n<\/tr>\n<tr data-start=\"1419\" data-end=\"1452\">\n<td data-start=\"1419\" data-end=\"1441\" data-col-size=\"sm\">Current Consumption<\/td>\n<td data-start=\"1441\" data-end=\"1452\" data-col-size=\"sm\">\u2264150 mA<\/td>\n<\/tr>\n<tr data-start=\"1453\" data-end=\"1494\">\n<td data-start=\"1453\" data-end=\"1477\" data-col-size=\"sm\">Operating Temperature<\/td>\n<td data-start=\"1477\" data-end=\"1494\" data-col-size=\"sm\">-10\u00b0C to 50\u00b0C<\/td>\n<\/tr>\n<tr data-start=\"1495\" data-end=\"1527\">\n<td data-start=\"1495\" data-end=\"1508\" data-col-size=\"sm\">Dimensions<\/td>\n<td data-start=\"1508\" data-end=\"1527\" data-col-size=\"sm\">32 \u00d7 20 \u00d7 22 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<hr data-start=\"1529\" data-end=\"1532\" \/>\n<h3 data-start=\"1534\" data-end=\"1554\"><strong data-start=\"1538\" data-end=\"1554\">Applications<\/strong><\/h3>\n<ul data-start=\"1556\" data-end=\"1760\">\n<li data-start=\"1556\" data-end=\"1590\">\n<p data-start=\"1558\" data-end=\"1590\">Carbon monoxide leak detection<\/p>\n<\/li>\n<li data-start=\"1591\" data-end=\"1631\">\n<p data-start=\"1593\" data-end=\"1631\">Home and industrial CO safety alarms<\/p>\n<\/li>\n<li data-start=\"1632\" data-end=\"1666\">\n<p data-start=\"1634\" data-end=\"1666\">Air quality monitoring systems<\/p>\n<\/li>\n<li data-start=\"1667\" data-end=\"1702\">\n<p data-start=\"1669\" data-end=\"1702\">IoT-based environmental sensing<\/p>\n<\/li>\n<li data-start=\"1703\" data-end=\"1733\">\n<p data-start=\"1705\" data-end=\"1733\">Smart home safety projects<\/p>\n<\/li>\n<li data-start=\"1734\" data-end=\"1760\">\n<p data-start=\"1736\" data-end=\"1760\">Automotive CO monitoring<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"1762\" data-end=\"1765\" \/>\n<h3 data-start=\"1767\" data-end=\"1803\"><strong data-start=\"1771\" data-end=\"1803\">Compatible Boards \/ Circuits<\/strong><\/h3>\n<ul data-start=\"1805\" data-end=\"1953\">\n<li data-start=\"1805\" data-end=\"1834\">\n<p data-start=\"1807\" data-end=\"1834\">Arduino (Uno, Nano, Mega)<\/p>\n<\/li>\n<li data-start=\"1835\" data-end=\"1854\">\n<p data-start=\"1837\" data-end=\"1854\">ESP32 \/ ESP8266<\/p>\n<\/li>\n<li data-start=\"1855\" data-end=\"1899\">\n<p data-start=\"1857\" data-end=\"1899\">Raspberry Pi (via ADC for analog output)<\/p>\n<\/li>\n<li data-start=\"1900\" data-end=\"1953\">\n<p data-start=\"1902\" data-end=\"1953\">Relay modules, alarms, buzzers, and display systems<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The MQ-7 sensor detects carbon monoxide (CO) gas and is ideal for air quality monitoring, safety alarms, and CO leakage detection systems.<\/p>\n","protected":false},"featured_media":584,"comment_status":"open","ping_status":"closed","template":"","meta":{"postBodyCss":"","postBodyMargin":[],"postBodyPadding":[],"postBodyBackground":{"backgroundType":"classic","gradient":""}},"product_brand":[],"product_cat":[353,145,356,403],"product_tag":[223,222,217],"class_list":{"0":"post-313","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-accessories","7":"product_cat-analog-electronics","8":"product_cat-electronics-components","9":"product_cat-modules-sensors","10":"product_tag-co","11":"product_tag-mq-7","12":"product_tag-sensor","14":"first","15":"instock","16":"taxable","17":"shipping-taxable","18":"purchasable","19":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product\/313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/comments?post=313"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/media\/584"}],"wp:attachment":[{"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/media?parent=313"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=313"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=313"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}