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Single Channel 5V Relay only– Opto-Isolated Relay Board
The Single Channel Relay Module is a convenient board which can be used to control high voltage, high current load such as motor, solenoid valves, lamps and AC load. It is designed to interface with microcontroller such as Arduino, NodeMCU, etc High-quality 1-channel 5V relay module with opto-isolation, perfect for controlling AC/DC devices using Arduino, Raspberry Pi, and microcontrollers in automation and DIY projects.
₹ 18 ₹49
49



Made In : | India |
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Key Features:
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Input Voltage: 5V DC
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Trigger Current: ~15–20mA
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Control Signal: TTL logic compatible (Arduino/RPi/ESP32)
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Opto-isolated input for safe switching
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Drives AC loads up to 250V/10A or DC loads up to 30V/10A
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Built-in status LED indicator
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Screw terminals for easy AC/DC load connection
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Ideal for smart home automation, IoT switching, and Arduino relay control
Product Description (Detailed):
The Single Channel Relay Module (5V) is a compact, opto-isolated board that allows low-voltage digital circuits (like Arduino, ESP32, or Raspberry Pi) to safely control high-voltage appliances like fans, lights, motors, and pumps.
The module contains an electromechanical relay, a driver transistor, an opto-isolator, and indicator LEDs. It's widely used in home automation, industrial control, IoT systems, and robotics to provide electrical isolation and safe switching.
With onboard screw terminals and standard 3-pin headers, it's easy to integrate into breadboards, PCBs, or jumper wire setups.
Technical Specifications:
Parameter | Specification |
---|---|
Operating Voltage | 5V DC |
Trigger Current | 15–20mA |
Relay Output Type | SPDT (Single Pole Double Throw) |
Relay Contact Rating | 10A @ 250VAC / 10A @ 30VDC |
Isolation | Opto-Isolated |
Indicators | Relay ON LED |
Interface Pins | VCC, GND, IN |
Dimensions | ~50mm x 25mm x 18mm |
Mounting Holes | Yes (for easy enclosure installation) |
How to Use:
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Connect VCC and GND to Arduino 5V and GND.
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Connect the IN pin to any Arduino digital pin (e.g., D7).
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Use
digitalWrite(D7, HIGH)
to activate the relay (switch ON the load). -
Use the screw terminal to connect AC or DC loads safely.
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Always ensure electrical isolation when working with high voltages.
Note: High-voltage side must be handled with caution and ideally kept isolated from low-voltage components.
Applications:
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Home Automation (smart lights, fans, etc.)
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Arduino & Raspberry Pi relay projects
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IoT-based switch controllers
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Industrial automation projects
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Motor and pump control systems
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AC appliance control via microcontroller
Package Includes:
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1 × Single Channel 5V Relay Module
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