4 Channel Isolated 5V 10A Relay Module opto coupler For Arduino PIC AVR DSP ARM1

Description

No. of Channel: 4 Trigger Voltage: 5VDC Triode drive, increasing relay coil High impedance controller pin Pull-down circuit for the avoidance of malfunction Power supply indicator and Control indicator lamp Power supply and relay instructions, lit, the disconnect is off; The input signal, signal, common Terminal and start conducting;