4 Channel 5V Relay Board
10 in stock4-channel 5V relay module with optocoupler isolation, LED indicators, and terminal blocks for controlling up to 4 high-power devices (10A, 250V AC) with Arduino/Raspberry Pi.
Product Description
The 4 Channel 5V Relay Board is a versatile relay module that allows you to control up to four high-power devices using low-power microcontroller signals. Each relay can independently switch AC or DC loads, making it perfect for home automation, industrial control, and robotics projects. Technica...
Product Specifications
| - Number of Relays | 4 independent channels |
| - Control Voltage | 5V DC (from Arduino/Raspberry Pi) |
| - Load Voltage | Up to 250V AC or 30V DC per relay |
| - Load Current | 10A per relay (maximum) |
| - Trigger Type | Active Low (LOW signal activates relay) |
| - Relay Type | Electromechanical relay |
| - Isolation | Optocoupler isolation for each channel |
| - Indicators | LED status indicators for each relay |
| - Connections | Terminal blocks for load connections, male headers for control signals |
| - Components | Transistors, optocouplers, diodes, LEDs |
| - Dimensions | Standard relay module size |
| - NO (Normally Open) | Contact is open when relay is OFF, closes when relay is ON |
| - NC (Normally Closed) | Contact is closed when relay is OFF, opens when relay is ON |
| - COM (Common) | Common terminal for both NO and NC contacts |
| - VCC | Connect to 5V from Arduino/Raspberry Pi |
| - GND | Connect to ground |
| - IN1, IN2, IN3, IN4 | Control signals (connect to digital pins) |
| 6. High | power load is switched ON/OFF |
| - Load | Connect between COM and NO/NC terminals |
| Note | Always observe proper safety precautions when working with high voltage. Use appropriate fuses and circuit breakers. Ensure proper grounding. |
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