12V Dual Channel Relay Module
Specifications:
- Dual channel (2 relay) module with 10A load capacity per relay
- Compatible with Arduino, Raspberry Pi, ESP32, and PIC
- Optocoupler isolation for high voltage protection
- Input trigger voltage: 3.3V–5V compatible with logic signals
- Supports both AC (250V) and DC (30V) loads
- LED indicators for power and relay status
Original price was: 245৳ .195৳ Current price is: 195৳ .
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11 in stock
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Description
🔌 12V Dual Channel Relay Module
2 Channel | 10A High Power Switching | Industrial Automation Compatible
📌 Overview
The 12V Dual Channel Relay Module is a high-power switching module designed to control two independent AC or DC loads using a 12V control signal.
It is commonly used in:
-
Industrial automation
-
Motor control systems
-
Smart home automation
-
Power switching applications
-
Robotics and embedded systems
Each channel contains a 12V electromagnetic relay capable of switching high-voltage loads safely.
⚡ Relay Specifications
| Feature | Specification |
|---|---|
| Relay Type | Electromagnetic |
| Coil Voltage | 12V DC |
| Channels | 2 |
| Contact Rating | 10A 250VAC |
| Contact Rating | 10A 30VDC |
| Relay Model | SRD-12VDC-SD-C (common) |
🔌 Input Pin Configuration
| Pin | Function |
|---|---|
| VCC | 12V Power Supply |
| GND | Ground |
| IN1 | Channel 1 Control |
| IN2 | Channel 2 Control |
Some versions include:
-
High/Low trigger selection jumper
🔄 Trigger Modes
Depending on board version:
-
🔹 Low Level Trigger → Relay activates when input is LOW
-
🔹 High Level Trigger → Relay activates when input is HIGH
Trigger type may be fixed or selectable via jumper.
🔌 Output Terminals (Per Channel)
Each relay has three screw terminals:
| Terminal | Function |
|---|---|
| COM | Common |
| NO | Normally Open |
| NC | Normally Closed |
Operation:
Relay OFF:
-
COM connected to NC
Relay ON:
-
COM connected to NO
🧠 Working Principle
-
Control signal applied to IN1 or IN2.
-
Transistor driver energizes 12V relay coil.
-
Magnetic contact switches.
-
High-voltage device turns ON or OFF.
Provides electrical isolation between control circuit and load circuit.
💡 Onboard Features
✔ 2 × 12V relays
✔ Transistor driver circuits
✔ Flyback diode protection
✔ Status LEDs for each channel
✔ Power LED indicator
✔ Screw terminal blocks
✔ Mounting holes
📐 Electrical Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 12V DC |
| Control Current | ~20–30mA per channel |
| Max Switching Current | 10A |
| Isolation | Mechanical isolation |
📏 Physical Specifications
-
PCB Color: Black / Blue
-
Durable industrial-grade PCB
-
Mounting holes for secure installation
-
Standard 2.54mm header pins
🎯 Advantages
✔ Control two devices independently
✔ Suitable for industrial systems
✔ High voltage & current capability
✔ Reliable and durable
✔ Easy to integrate
✔ Strong isolation for safety
📦 Applications
-
Industrial control panels
-
Motor switching systems
-
Smart irrigation systems
-
Lighting automation
-
Pump control
-
HVAC control
-
Robotics switching systems
-
IoT power control
🆚 5V vs 12V Relay Module
| Feature | 5V Relay | 12V Relay |
|---|---|---|
| Coil Voltage | 5V | 12V |
| Suitable For | Arduino projects | Industrial systems |
| Stability | Good | Better for heavy systems |
| Power Source | 5V supply | 12V supply |
🧑💻 Basic Example (12V System)
Customer Reviews
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