* Subcircuit for 4-Channel Relay Module .SUBCKT RELAY_4CH_MODULE IN1 IN2 IN3 IN4 VCC GND COM1 NC1 NO1 COM2 NC2 NO2 COM3 NC3 NO3 COM4 NC4 NO4 * Channel 1 R1 IN1 VCC 1K D1 COM1 GND 1N4148 RLY1 COM1 NC1 NO1 RELAY_VIRTUAL * Repeat for channels 2-4 .ENDS

The 4-channel relay module library for Proteus that we will provide has the following features: