6 Channel 12V Relay Module Solid State High Level SSR DC Control 250V 2A with Resistive ESP8285 Wi-Fi SoC Module this shield is compatible with

this shield is compatible with most microcontroller platforms

For Intel platforms

Modbus RTU over RS485: Industry-standard communication protocol enables seamless integration with PLCs

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6 Channel 12V Relay Module Solid State High Level SSR DC Control 250V 2A with Resistive ESP8285 Wi-Fi SoC Module this shield is compatible with6 Channel 12V Relay Module Solid State High Level SSR DC Control 250V 2A with Resistive This is a 6 Channel 12V Solid State Relay Module. A solid state relay (SSR) is just what it sounds like; an IC that acts like a mechanical relay. They allow you to control high voltage AC loads from lower voltage DC control circuitry. They accomplish this by using infrared light as the 'contact,' a solid staterelayis really just an IR LED and a photo Triac sealed