Proteus Design Suite (specifically ISIS) is a leading EDA software for schematic capture and simulation. While it has an extensive component library, pre-assembled modules (like the 4-channel relay board) are often missing or represented as generic switches.
A 4-channel relay module is an electronic device that consists of four individual relay channels, each capable of switching high-power devices on and off. The module is typically controlled by a microcontroller or a digital signal, allowing for precise control over the connected devices. The relay module is commonly used in applications such as home automation, industrial control systems, and robotics.
Once you have downloaded the library files (usually 4RELAY.LIB and 4RELAY.IDX), follow these steps:
.MODEL RelayChannel (SWITCH)
+ RON=0.1
+ ROFF=1e6
+ VT=2.5 ; Threshold voltage for activation
+ VH=0.5 ; Hysteresis