5V 8 Channel Solid State Relay Module High Level Trigger DC-AC/DC-DC Control Board with Resistive Fuse
1. DC + and DC – are used to connect module power supply, voltage is 5V.
2. The CH terminal is the trigger terminal of the module. When there is trigger signal, the output switches (A, B) of the solid state relay will be closed and the load will be conductive.
3. The Meaning of High Level Trigger and Low Level Trigger: High-level trigger: In industrial control, called PNP trigger, positive trigger, that is, the relay closes when the trigger voltage reaches the trigger condition before the trigger terminal and the negative pole of the power supply.
Please allow 1-3cm differs due to manual measurement.
Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.
1 x 5V 8 Channel Solid State Relay Module