5V 4 Channel Relay Module (with Optocoupler)

Supply voltage – 3.75V to 6V
Trigger current – 5mA
Current when the relay is active – ~70mA (single), ~300mA (all four)
Relay maximum contact voltage – 250VAC, 30VDC
Relay maximum current – 10A
Triode drive, increasing relay coil
High impedance controller pin
Pull-down circuit for avoidance of malfunction
Power supply indicator and Control indicator lamp
Power supply and relay instructions, lit, disconnect is off;
Input signal, signal, common Terminal and start conducting;
Useful for appliance control;
DC or AC signal, control, you can control the 220V AC load;