6 Channel 12V Relay Module Solid State High Level SSR DC Control 250V 2A with Resistive Tube Type Inductive Proximity Sensor Detection Switch NPN DC5-36V 4mm Normally Open switch LJ12A3-4-Z/BX digital signal analysis (FSK

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6 Channel 12V Relay Module Solid State High Level SSR DC Control 250V 2A with Resistive Tube Type Inductive Proximity Sensor Detection Switch NPN DC5-36V 4mm Normally Open switch LJ12A3-4-Z/BX digital signal analysis (FSK6 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