5V or 12V 1-2-4-8-16 Channel Relay High Low Level Optocoupler Module Arduino PI 5V or 12V 1-2-4-8-16 Channel Relay High Low Level Optocoupler Module Arduino PI

Module interface:1. DC+: positive power supply (VCC)2. DC-: negative power supply (GND)3. IN: can be high or low level control relay Relay outputs:1. NO: normally open relay interface2. COM: Common...

Module interface:1. DC+: positive power supply (VCC)2. DC-: negative power supply (GND)3. IN: can be high or low level control relay Relay outputs:1. NO: normally open relay interface2. COM: Common...