Description
This 3-Channel DC Relay Expansion Board allows you to independently control up to three high-power electrical devices using low-voltage microcontroller signals. Featuring built-in optocoupler isolation, it protects your microcontrollers while managing lights, motors, and appliances.
Key Features:
- 3-Channel Independent Control: Trigger and control 3 separate high-power circuits simultaneously from a single module.
- Optocoupler Isolation: Integrated optical isolators shield your sensitive microcontrollers (like Arduino) from high-voltage spikes, electrical noise, and back-EMF.
- High Switching Load: Efficiently handles loads up to 250V AC / 10A and 30V DC / 10A per channel.
- Flexible NO/NC Terminals: Each channel includes standard heavy-duty screw terminals with Normally Open (NO), Common (COM), and Normally Closed (NC) connections.
- Onboard LED Indicators: Features dedicated status LEDs for each channel to give clear visual feedback whenever a relay triggers.
- Arduino & Microcontroller Ready: Operates on standard 5V DC power and connects easily to Arduino, Raspberry Pi, ESP32, and PIC boards via header pins.
- Versatile Applications: Ideal for multi-device smart home automation, industrial control prototypes, multi-stage fan/motor control, and DIY robotics projects.
