1 Channel 5V Relay Board Module

Features: Onboard high-isolation optocoupler driver chip maintains clean separation between high and low voltage fields. Configurable signaling path allows jumper selection between High-Level and Low-Level trigger logic. Equipped with clear dual LED status indicators: Green for main VCC power and Red for relay coil engagement. Fault-tolerant logic prevents accidental contact activation if the input control link drops open. Heavy-duty 3-port screw terminal block handles stable, direct wiring hookups for external lines. Applications: Interfacing standard 5V logic microcontrollers with household AC 220V appliances securely. Robotics: Managing high-torque DC motor brakes, isolation lines, and linear actuator power grids. Building smart home automation switches, remote relays, and timed power strips. Providing a robust isolated actuator stage for university lab kits and research prototypes. Developing emergency power cutoffs and automated industrial indicator switching frames.