8 Channel 12V Relay Module Solid State High Level SSR DC Control 250V 2A with Resistive DIY 4CH 6-Axis Gyro Mini Quadcopter Kit Durable Construction - Orange protective

Durable Construction - Orange protective casing for durability

and identifying faulty power supplies

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8 Channel 12V Relay Module Solid State High Level SSR DC Control 250V 2A with Resistive DIY 4CH 6-Axis Gyro Mini Quadcopter Kit Durable Construction - Orange protective8 Channel 12V Relay Module Solid State High Level SSR DC Control 250V 2A with Resistive 8 Channel 12V Relay Module Solid Sta This is 8 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 state relay is really just