{"id":347,"date":"2025-11-20T19:51:57","date_gmt":"2025-11-20T19:51:57","guid":{"rendered":"https:\/\/hamtechtechnologies.com\/index.php\/product\/4-channel-relay\/"},"modified":"2025-11-30T09:19:14","modified_gmt":"2025-11-30T09:19:14","slug":"4-channel-relay","status":"publish","type":"product","link":"https:\/\/hamtechtechnologies.com\/index.php\/product\/4-channel-relay\/","title":{"rendered":"4-channel Relay 12v"},"content":{"rendered":"<p data-start=\"394\" data-end=\"916\">This <strong data-start=\"428\" data-end=\"458\">4-Channel 12V Relay Module<\/strong> is designed for controlling 4 separate high-voltage devices using a low-voltage microcontroller such as Arduino, ESP32, or Raspberry Pi. Each relay channel is opto-isolated, which protects your microcontroller from high-voltage spikes. The module supports both active HIGH and LOW triggering and includes onboard LEDs to indicate relay status. Ideal for home automation, IoT, and robotics projects, it provides safe and reliable control of AC or DC loads.<\/p>\n<p data-start=\"918\" data-end=\"936\"><strong data-start=\"918\" data-end=\"934\">Key Features<\/strong><\/p>\n<ul data-start=\"937\" data-end=\"1270\">\n<li data-start=\"937\" data-end=\"1018\">\n<p data-start=\"939\" data-end=\"1018\">4-channel relay module, each channel rated for 10A at 250V AC \/ 10A at 30V DC<\/p>\n<\/li>\n<li data-start=\"1019\" data-end=\"1073\">\n<p data-start=\"1021\" data-end=\"1073\">Opto-isolated input for microcontroller protection<\/p>\n<\/li>\n<li data-start=\"1074\" data-end=\"1117\">\n<p data-start=\"1076\" data-end=\"1117\">Onboard LED indicators for relay status<\/p>\n<\/li>\n<li data-start=\"1118\" data-end=\"1166\">\n<p data-start=\"1120\" data-end=\"1166\">Supports both active HIGH and LOW triggering<\/p>\n<\/li>\n<li data-start=\"1167\" data-end=\"1196\">\n<p data-start=\"1169\" data-end=\"1196\">Operating voltage: 12V DC<\/p>\n<\/li>\n<li data-start=\"1197\" data-end=\"1270\">\n<p data-start=\"1199\" data-end=\"1270\">Suitable for Arduino, ESP32, Raspberry Pi, and other microcontrollers<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1272\" data-end=\"1286\"><strong data-start=\"1272\" data-end=\"1284\">Variants<\/strong><\/p>\n<ul data-start=\"1287\" data-end=\"1377\">\n<li data-start=\"1287\" data-end=\"1322\">\n<p data-start=\"1289\" data-end=\"1322\">4-Channel Standard Relay Module<\/p>\n<\/li>\n<li data-start=\"1323\" data-end=\"1377\">\n<p data-start=\"1325\" data-end=\"1377\">4-Channel with screw terminals for easy connection<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1379\" data-end=\"1399\"><strong data-start=\"1379\" data-end=\"1397\">Specifications<\/strong><\/p>\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=\"1401\" data-end=\"1671\">\n<thead data-start=\"1401\" data-end=\"1424\">\n<tr data-start=\"1401\" data-end=\"1424\">\n<th data-start=\"1401\" data-end=\"1411\" data-col-size=\"sm\">Feature<\/th>\n<th data-start=\"1411\" data-end=\"1424\" data-col-size=\"sm\">Details<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"1449\" data-end=\"1671\">\n<tr data-start=\"1449\" data-end=\"1467\">\n<td data-start=\"1449\" data-end=\"1460\" data-col-size=\"sm\">Channels<\/td>\n<td data-start=\"1460\" data-end=\"1467\" data-col-size=\"sm\">4<\/td>\n<\/tr>\n<tr data-start=\"1468\" data-end=\"1496\">\n<td data-start=\"1468\" data-end=\"1484\" data-col-size=\"sm\">Relay Voltage<\/td>\n<td data-start=\"1484\" data-end=\"1496\" data-col-size=\"sm\">12V DC<\/td>\n<\/tr>\n<tr data-start=\"1497\" data-end=\"1542\">\n<td data-start=\"1497\" data-end=\"1508\" data-col-size=\"sm\">Max Load<\/td>\n<td data-start=\"1508\" data-end=\"1542\" data-col-size=\"sm\">10A @ 250V AC \/ 10A @ 30V DC<\/td>\n<\/tr>\n<tr data-start=\"1543\" data-end=\"1575\">\n<td data-start=\"1543\" data-end=\"1556\" data-col-size=\"sm\">Input Type<\/td>\n<td data-start=\"1556\" data-end=\"1575\" data-col-size=\"sm\">Opto-Isolated<\/td>\n<\/tr>\n<tr data-start=\"1576\" data-end=\"1609\">\n<td data-start=\"1576\" data-end=\"1586\" data-col-size=\"sm\">Trigger<\/td>\n<td data-start=\"1586\" data-end=\"1609\" data-col-size=\"sm\">Active HIGH \/ LOW<\/td>\n<\/tr>\n<tr data-start=\"1610\" data-end=\"1636\">\n<td data-start=\"1610\" data-end=\"1627\" data-col-size=\"sm\">LED Indicators<\/td>\n<td data-start=\"1627\" data-end=\"1636\" data-col-size=\"sm\">Yes<\/td>\n<\/tr>\n<tr data-start=\"1637\" data-end=\"1671\">\n<td data-start=\"1637\" data-end=\"1650\" data-col-size=\"sm\">Dimensions<\/td>\n<td data-start=\"1650\" data-end=\"1671\" data-col-size=\"sm\">85 \u00d7 55 \u00d7 18 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"1673\" data-end=\"1691\"><strong data-start=\"1673\" data-end=\"1689\">Applications<\/strong><\/p>\n<ul data-start=\"1692\" data-end=\"1945\">\n<li data-start=\"1692\" data-end=\"1738\">\n<p data-start=\"1694\" data-end=\"1738\">Home automation (lights, fans, appliances)<\/p>\n<\/li>\n<li data-start=\"1739\" data-end=\"1789\">\n<p data-start=\"1741\" data-end=\"1789\">IoT projects requiring multiple relay controls<\/p>\n<\/li>\n<li data-start=\"1790\" data-end=\"1828\">\n<p data-start=\"1792\" data-end=\"1828\">Robotics and industrial automation<\/p>\n<\/li>\n<li data-start=\"1829\" data-end=\"1884\">\n<p data-start=\"1831\" data-end=\"1884\">Arduino, ESP32, Raspberry Pi-based control projects<\/p>\n<\/li>\n<li data-start=\"1885\" data-end=\"1945\">\n<p data-start=\"1887\" data-end=\"1945\">High-voltage load switching with low-voltage controllers<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1947\" data-end=\"1981\"><strong data-start=\"1947\" data-end=\"1979\">Compatible Boards \/ Circuits<\/strong><\/p>\n<ul data-start=\"1982\" data-end=\"2118\">\n<li data-start=\"1982\" data-end=\"2009\">\n<p data-start=\"1984\" data-end=\"2009\">Arduino Uno, Mega, Nano<\/p>\n<\/li>\n<li data-start=\"2010\" data-end=\"2029\">\n<p data-start=\"2012\" data-end=\"2029\">ESP32 \/ ESP8266<\/p>\n<\/li>\n<li data-start=\"2030\" data-end=\"2074\">\n<p data-start=\"2032\" data-end=\"2074\">Raspberry Pi (via GPIO and relay driver)<\/p>\n<\/li>\n<li data-start=\"2075\" data-end=\"2118\">\n<p data-start=\"2077\" data-end=\"2118\">Any microcontroller with digital output<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The <strong data-start=\"223\" data-end=\"253\">4-Channel 12V Relay Module<\/strong> allows you to control multiple high-voltage devices safely from a low-voltage microcontroller, with opto-isolated inputs for protection.<\/p>\n","protected":false},"featured_media":494,"comment_status":"open","ping_status":"closed","template":"","meta":{"postBodyCss":"","postBodyMargin":[],"postBodyPadding":[],"postBodyBackground":{"backgroundType":"classic","gradient":""}},"product_brand":[],"product_cat":[353,420,356,67,355],"product_tag":[279,277],"class_list":{"0":"post-347","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-accessories","7":"product_cat-diy-electronics","8":"product_cat-electronics-components","9":"product_cat-power-modules","10":"product_cat-relay-modules","11":"product_tag-4-channel","12":"product_tag-relay","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\/347","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=347"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/media\/494"}],"wp:attachment":[{"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/media?parent=347"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=347"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=347"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}