The 4 Channel 5V Relay Board Module is a powerful and reliable relay switch module that enables your microcontroller to control up to four high-voltage devices independently. Perfect for home automation, smart farming, industrial controls, and DIY electronics projects, this relay board is designed to handle AC loads up to 250V and DC loads up to 30V at 10A.
Each relay is optically isolated for improved protection, ensuring the safety of your connected microcontroller like Arduino, ESP8266, ESP32, Raspberry Pi, and more. The onboard LED indicators show the working status of each relay, making debugging and monitoring easier.
Whether you’re turning on lights, controlling fans, water pumps, or other appliances, this 4-channel relay module is a must-have for multi-device control in embedded and automation systems.
⭐ Key Features:
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⚡ Control 4 independent AC or DC loads
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🔌 Compatible with 5V logic from Arduino, NodeMCU, ESP32, Raspberry Pi, etc.
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🔒 Optocoupler isolation protects from voltage surges
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💡 Status LEDs for each relay channel
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🔧 Screw terminals for secure connections
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🔁 Normally Open (NO) & Normally Closed (NC) outputs available
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📦 Great for IoT, home automation, robotics, and smart systems
⚙️ Technical Specifications:
| Parameter | Specification |
|---|---|
| Relay Voltage | 5V DC |
| Trigger Voltage | 3.3V–5V logic compatible |
| Channels | 4 (Quad Relay) |
| Max AC Load | 250V @ 10A |
| Max DC Load | 30V @ 10A |
| Isolation | Optocoupler isolation |
| Output Type | NO & NC |
| Indicators | LED per channel |
| Compatible Boards | Arduino, ESP32, Raspberry Pi, STM32, etc. |
| Dimensions | Approx. 75mm x 55mm x 18mm |
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