1 Channel Isolated 5V Relay Module Coupling For Arduino PIC AVR DSP ARM the module is compliant with international safety standards, control and load areas isolation trenches; a single relay a genuine; power supply and relay instructions, lit, disconnect is off; input signal, signal, common Terminal and start conducting; can be used as a single Read more about 1 Channel Isolated 5V Relay Module Coupling For Arduino PIC AVR DSP ARM[…]