EL817 5V 10A Adjustable Optocoupler Isolation Relay Module - Deep Blue
On-board EL817 optocoupler strong anti-interference; On-board 5V10A/250VAC10A/30VDC replay; Long relay life can pull 100000 times in a row?; Modules can be directly connected microcontroller I / O port the input signal is triggered mode (active high mode and active-low mode)? selected by the jumpper cap; Module with an output signal indication and freewheeling diode protection?