--- 4 Channel Relay Module Library For Proteus Official

// Initialize the relay module relayInit(RELAY_PIN);

: The circuit is closed by default and opens when triggered. Simulation Steps in Proteus

While Proteus includes basic relay components (e.g., RLY-SPST , RLY-DPDT ), these don’t represent the actual 4-channel relay modules used in real life—complete with optocouplers, transistor drivers, LED indicators, and a 3-pin control interface (VCC, GND, IN1–IN4).

A is an electromechanical interface that allows low-voltage logic (5V/12V from a microcontroller) to control high-voltage appliances (e.g., 230V AC lights, fans, pumps, motors). Creating a dedicated library for this module in Proteus bridges the gap between virtual simulation and real-world hardware debugging.

// Initialize the relay module relayInit(RELAY_PIN);

: The circuit is closed by default and opens when triggered. Simulation Steps in Proteus

While Proteus includes basic relay components (e.g., RLY-SPST , RLY-DPDT ), these don’t represent the actual 4-channel relay modules used in real life—complete with optocouplers, transistor drivers, LED indicators, and a 3-pin control interface (VCC, GND, IN1–IN4).

A is an electromechanical interface that allows low-voltage logic (5V/12V from a microcontroller) to control high-voltage appliances (e.g., 230V AC lights, fans, pumps, motors). Creating a dedicated library for this module in Proteus bridges the gap between virtual simulation and real-world hardware debugging.