A 5V Dual-Channel Relay Module integrates two independently controlled electromagnetic relays onto a single printed circuit board (PCB). It allows a low-power microcontroller (like an Arduino, ESP32, or Raspberry Pi) to switch up to two high-voltage AC or DC appliances simultaneously. It is the premier mid-tier choice across India for automated smart-home lighting fixtures, reverse-forward DC motor direction controlling circuits, and dual-pump automated agricultural setups.
✨ Key Features
- Dual Optocoupler Galvanic Isolation: Features two built-in PC817 optocoupler chips that physically separate the digital control signals from the heavy load circuits using light vectors, protecting your controller from back-EMF surges.
- Independent Jumper Configurations: Most versions include a standard JD-VCC / VCC jumper plug, allowing users to supply an independent 5V power rail strictly to drive the copper coils without sharing electrical noise with the microcontroller logic.
- Flexible Dual-Logic Shifting: Outfitted to function as a Low-Level Trigger module by default, meaning pulling the signal pins to Ground (0V) completes the circuit and clicks the relay active.
- Visual Status Indicators: Features three distinct surface-mount LEDs; one to show the board has Power (Red) and two individual indicators to show when Channel 1 (IN1) or Channel 2 (IN2) is engaged.
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