This 3 channel 5v realy module is high level trigger,on-board pin marked GND(RGND)5V is respectively relay 5V power negative and positive;CH1,CH2,CH3 is control port,high level trigger;that is to say,after module power on,control port receives high level,the relay will be connected.
Features of 3 Channel 5V Relay Module:
On-board EL817 photoelectric coupler with photoelectric isolating antiinterference
ability strong
On-board 5V, 10A / 250VAC, 10A / 30VDC relays
Relay long life can absorb 100000 times in a row
Module can be directly and MCU I/O link, with the output signal indicator
Module with diode current protection, short response time
PCB Size: 45.8mm x 32.4mms
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