The newly developed 4-Channel Relay Module library for Proteus successfully emulates a commercial relay board, allowing designers to simulate multi-channel switching applications (home automation, industrial controls, Arduino interfaces) without building discrete relay networks. The library supports both schematic capture and PCB layout with accurate pin mapping, reducing design time by 60% compared to using individual relay components.
Note: Always scan downloaded files with antivirus. The official recommendation is to check user forums like "The Engineering Projects" where the creator releases regular updates.
A typical 4-channel relay module (e.g., Songle SRD-05VDC-SL-C based) contains: 4 channel relay module library for proteus new
| Issue | Workaround |
|--------------------------------|---------------------------------------------------|
| No opto-isolation in simulation| Add OPTOCOUPLER manually inside the package |
| High current simulation slow | Use VSWH model for fast switching |
| No built-in suppression diode | Include D1–D4 inside the subcircuit |
A typical use case: controlling 4 household bulbs (simulated as DC motors or LEDs) via an Arduino Uno. The newly developed 4-Channel Relay Module library for
Schematic setup using the new library:
Simulation outcome: Write a simple Arduino sketch to sequence relays. The new library’s LED indicators will blink in sync, and any connected virtual loads will switch. You can even measure coil current using Proteus’s virtual instruments. Simulation outcome: Write a simple Arduino sketch to
Even with a new library, you may encounter issues. Here is how to fix them: