RELAY MODULE (1 CHANNEL 12 V)

The isolation relay module is an electrically operated switch that allows you to turn on or off a circuit using voltage and/or current much higher than a microcontroller could handle. There is no connection between the low voltage circuit operated by the microcontroller and the high power circuit. The relay protects each circuit from each other.

The module has three connections named NC, COM, and NO. Depending on the input signal trigger mode, the jumper cap can be placed at high level effective mode which ‘closes’ the normally open (NO) switch at high level input and at low level effective mode which operates the same but at low level input.
Specification:
Onboard EL817 photoelectric coupler with photoelectric isolating anti-interference ability strong.
Onboard 5 v, 10 A / 250 VAC, 10 A / 30 VDC relays, relay long life can absorb 100000 times in a row.
Module can be directly and MCU I/O link, input signal trigger mode (high level effective mode and low level effective mode) can be choose by jumper cap.
Module with the instructions and signal output diode current protection
PCB size: 46 (mm) x 17.6 (mm).


Link to Sample Test Code:
https://drive.google.com/open?id=0BwzvAKrGmmk5RDduZWVHbTZZWFU