{"product_id":"1-channel-relay-module-5v-12v-24v-optocoupler-arduino","title":"1-Channel Relay Module 5V\/12V\/24V — Optocoupler Isolation, High\/Low Trigger, Arduino","description":"\u003ch2\u003e1-Channel Relay Module — 5V\/12V\/24V, Optocoupler Isolation, High\/Low Trigger\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003esingle-channel relay module\u003c\/strong\u003e with SMD optocoupler isolation allows an Arduino, ESP32, or Raspberry Pi to switch AC and DC loads up to 250V\/10A using a low-voltage digital signal. The optocoupler provides electrical isolation between the control circuit and the high-voltage load circuit, protecting the microcontroller from voltage spikes and noise. Supports both high-level and low-level trigger for compatibility with any MCU output.\u003c\/p\u003e\n\n\u003ch3\u003eElectrical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoil Voltage:\u003c\/strong\u003e 5V \/ 12V \/ 24V (select version)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum AC Load:\u003c\/strong\u003e 250V \/ 10A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum DC Load:\u003c\/strong\u003e 30V \/ 10A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrigger:\u003c\/strong\u003e High level or low level (selectable)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIsolation:\u003c\/strong\u003e SMD optocoupler — electrical isolation between control and load\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContacts:\u003c\/strong\u003e SPDT — NO (Normally Open) and NC (Normally Closed)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Indicator:\u003c\/strong\u003e Status LED for relay state\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHigh vs Low Level Trigger\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh level trigger:\u003c\/strong\u003e Relay activates when control pin goes HIGH (3.3V or 5V) — default for most Arduino projects\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow level trigger:\u003c\/strong\u003e Relay activates when control pin goes LOW (GND) — for active-LOW MCU outputs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWiring\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVCC:\u003c\/strong\u003e 5V (or 12V\/24V depending on version)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGND:\u003c\/strong\u003e Ground\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIN:\u003c\/strong\u003e Control signal from Arduino digital output pin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCOM:\u003c\/strong\u003e Common terminal of relay\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNO:\u003c\/strong\u003e Normally Open — connects to COM when relay is activated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNC:\u003c\/strong\u003e Normally Closed — connects to COM when relay is NOT activated\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSmart home light switching (AC 220V)\u003c\/li\u003e\n  \u003cli\u003eArduino-controlled appliance switching\u003c\/li\u003e\n  \u003cli\u003ePump and solenoid valve control\u003c\/li\u003e\n  \u003cli\u003eTemperature-controlled heating\/cooling switching\u003c\/li\u003e\n  \u003cli\u003eIoT home automation with ESP32\/ESP8266\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eSingle-channel, optocoupler-isolated relay module — safe and reliable AC\/DC load switching for Arduino, ESP32, and Raspberry Pi projects.\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"12V","offer_id":46981894635755,"sku":"14:350850#12V","price":8.24,"currency_code":"USD","in_stock":true},{"title":"5V","offer_id":46981894668523,"sku":"14:350852#5V","price":8.16,"currency_code":"USD","in_stock":true},{"title":"24V","offer_id":46981894701291,"sku":"14:1254#24V","price":8.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/1-channel-relay-module-5v-12v-24v-optocoupler-arduino.webp?v=1761112703","url":"https:\/\/keszoox.com\/products\/1-channel-relay-module-5v-12v-24v-optocoupler-arduino","provider":"Keszoox","version":"1.0","type":"link"}