YLA-1 EL817 4 Channel Optocoupler Isolation Module

 

YLA-1 EL817 4 Channel Optocoupler Isolation Module.The function of this board is, which can improve the anti-interference ability of the circuit and at the same time signal is to isolate the input signal through the optocoupler and output signal, which can convert the voltage. It has an LED light that indicates both the circuit input signal and output signal. The input signal is compatible with high level and low level, and the output signal is low level.