2 Channel Relay Module 12 V
₹77.88 incl. GST (₹66.00 + GST)
The 12V 2 Channel Relay Module with Optical Isolation is a dual-channel relay board designed to control electrical loads using microcontroller signals. It features photocoupler isolation, low-level triggering, status LEDs, and separate VCC/JD_VCC power connections for improved control and interference protection. Each relay supports up to 10A at 250V AC or 10A at 30V DC, making it suitable for Arduino, ESP32, automation, robotics, home control, pumps, motors, and lighting applications.
12V 2 Channel Relay Module with Optical Isolation
Product Description
The 12V 2 Channel Relay Module with Optical Isolation is a dual-channel relay board designed to control high-voltage or high-current electrical loads using a low-power control signal from a microcontroller or control system. It uses photocoupler isolation to provide electrical separation between the control circuit and relay switching section, helping improve protection against electrical interference.
The module features two independent relay channels, allowing two separate loads to be controlled. The relay can be triggered through the IN1 and IN2 control inputs. The module supports low-level triggering, where the relay activates when the corresponding input is pulled LOW and releases when the input returns HIGH.
Each relay channel provides switching capability up to 10A at 250V AC or 10A at 30V DC, making the module suitable for controlling lamps, motors, solenoids, fans, pumps, and other compatible electrical loads.
The board provides separate VCC and JD_VCC power connections for the control and relay power sections. A jumper is provided for convenient power configuration when using the default relay supply arrangement.
Features
- 2-channel relay module
- 12V relay module
- Optical/photocoupler isolation
- Good resistance to electrical interference
- Low-level trigger operation
- Independent IN1 and IN2 control inputs
- Relay status indicator LEDs
- Separate VCC and JD_VCC power connections
- Supports high-current and high-voltage load switching
- Suitable for microcontroller-based control systems
- Compact and easy-to-integrate design
Specifications
| Parameter | Specification |
|---|---|
| Product Type | 2 Channel Relay Module |
| Number of Channels | 2 |
| Relay Coil Voltage | 12V |
| Trigger Type | Low Level |
| Isolation | Photocoupler / Optical Isolation |
| Relay Contact Rating | 10A |
| Maximum AC Load | 250V AC / 10A |
| Maximum DC Load | 30V DC / 10A |
| Control Inputs | IN1, IN2 |
| System Power | VCC, GND |
| Relay Power | JD_VCC |
| Status Indicator | LED |
| Relay Configuration | NO, NC, COM |
Pin Configuration
| Pin | Function |
|---|---|
| VCC | Positive pole of system/control power supply |
| GND | Negative pole of system/control power supply |
| IN1 | Relay Channel 1 control input |
| IN2 | Relay Channel 2 control input |
| JD_VCC | Relay power supply input |
Design and Construction
The module is built on a compact PCB containing two electromechanical relays, optical isolation components, driver circuitry, indicator LEDs, and screw terminals for convenient load connections.
The photocouplers provide isolation between the control signal and relay circuitry, helping reduce the effect of electrical noise and interference generated by connected loads.
The relay contacts provide COM, NO, and NC terminals, allowing users to configure loads for normally open or normally closed operation according to the application.
Working Principle
The module receives control signals through IN1 and IN2. When a channel receives the required low-level trigger signal, its corresponding relay is energized and the status indicator LED turns on.
When the control signal is released, the relay returns to its inactive state and the indicator LED turns off.
The relay electrically switches the connected load through its COM, NO, and NC contacts. The optical isolation separates the control signal from the relay switching circuit, providing improved electrical isolation between the controller and load side.
Wiring Instructions
- VCC: Connect to the positive terminal of the system/control power supply.
- GND: Connect to the negative terminal of the system/control power supply.
- IN1: Control input for Relay Channel 1.
- IN2: Control input for Relay Channel 2.
- JD_VCC: Connect to the relay power supply as required by the module configuration.
The onboard jumper can be used according to the intended power configuration. Verify the module’s relay voltage and wiring before applying power.
Applications
- Arduino relay control
- ESP32 and ESP8266 projects
- Home automation
- Lighting control
- Pump control
- Fan control
- Motor switching
- Solenoid control
- Industrial automation prototypes
- DIY electronics
- IoT projects
- Robotics
- Appliance control
- Automated switching systems
Package Includes
- 1 × 12V 2 Channel Relay Module with Optical Isolation
Product Disclaimer
Relay contact ratings represent the maximum specified switching capacity and should not automatically be treated as suitable for every load type. Motors, pumps, transformers, and other inductive loads may require additional protection and appropriate switching considerations.
High-voltage AC and high-current DC connections can be hazardous. Use proper insulation, wiring, fusing, and safety precautions during installation.
Product images are for representation only. The actual product may differ slightly in appearance, colour, component placement, or terminal configuration depending on the manufacturing batch.
FAQs – 12V 2 Channel Relay Module with Optical Isolation
1. What is the 12V 2 Channel Relay Module?
It is a dual-channel relay module used to control electrical loads such as motors, pumps, fans, lights, and appliances using a control signal.2. How many devices can it control?
It has 2 independent relay channels, allowing two separate loads or circuits to be controlled.3. What is the relay coil voltage?
The module uses 12V relays for the relay power section.4. What type of trigger does the module use?
It uses low-level triggering, meaning the relay is activated when the corresponding control input is pulled LOW.5. What is optical isolation?
Optical isolation uses photocouplers to electrically separate the control circuitry from the relay section, helping reduce interference and improve system protection.6. What is the maximum relay rating?
Each relay is rated up to 10A at 250V AC or 10A at 30V DC, subject to the load type and proper installation.7. What are IN1 and IN2 used for?
IN1 controls Relay Channel 1, while IN2 controls Relay Channel 2.8. What is VCC used for?
VCC is the positive supply connection for the system/control side of the module.9. What is JD_VCC used for?
JD_VCC is the power supply connection for the relay section.10. What is the purpose of the jumper?
The jumper allows the power arrangement between the control and relay sections to be configured according to the application.11. Does the module have relay status indicators?
Yes. The onboard LED indicators show the operating status of the corresponding relay channels.12. Can this module be used with Arduino?
Yes. It can be used in Arduino projects with suitable power and control connections.13. Can it be used with ESP32?
Yes. It can be integrated with ESP32 and other controllers when the control signal and power requirements are properly matched.14. What type of loads can it control?
It can be used for compatible AC or DC loads, including lights, fans, pumps, motors, solenoids, and other electrical devices.15. Can it directly power the connected load?
No. The relay acts as an electrical switch. The load requires its own appropriate power supply.16. Can it control high-voltage AC loads?
Yes, within the specified relay contact rating. However, high-voltage AC wiring should be performed with appropriate electrical safety precautions.17. Does optical isolation completely protect the controller?
Optical isolation provides electrical separation between the control and relay sections, but proper grounding, power supply design, wiring, and load protection are still required.18. Can inductive loads such as motors and pumps be controlled?
Yes, but inductive loads can produce switching transients. Suitable suppression and protection components may be required depending on the load.19. What are COM, NO, and NC terminals?
COM is the common relay contact, NO (Normally Open) connects to COM when the relay is activated, and NC (Normally Closed) connects to COM when the relay is inactive.20. What is included in the package?
The package includes 1 × 12V 2 Channel Relay Module with Optical Isolation.Only logged in customers who have purchased this product may leave a review.
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