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The 5V 1 Channel Relay Module with Optocoupler is a reliable switching module designed to control high-voltage and high-current devices using low-voltage microcontroller systems. It allows Arduino, ESP32, Raspberry Pi, and other development boards to safely control electrical appliances, motors, lights, and industrial equipment.
This relay module features an onboard optocoupler isolation circuit that provides electrical separation between the control signal and the relay switching section, improving system safety and reducing interference. It supports both high-level and low-level trigger modes, allowing flexible integration with different control systems.
With its compact design, indicator LEDs, and easy-to-use screw terminals, this relay module is suitable for automation projects, smart home systems, robotics, and embedded applications.
Key Features:
Single-channel 5V relay module
Supports high-level and low-level trigger control
Built-in optocoupler isolation for improved safety
LED indicators for power and relay status
Relay output with NO, NC, and COM terminals
Easy connection with Arduino, ESP32, Raspberry Pi, and microcontrollers
Compact and durable design
Suitable for controlling high-power devices
Technical Specifications:
Module type: 1 Channel Relay Board
Operating voltage: 5V DC
Trigger mode: High level / Low level selectable
Relay type: Electromagnetic relay
Control signal voltage: Compatible with 3.3V and 5V logic systems (depending on module design)
Isolation type: Optocoupler
Output terminals: NO (Normally Open), NC (Normally Closed), COM (Common)
Interface pins: VCC, GND, IN
Applications:
Smart home automation systems
Arduino and ESP32 control projects
IoT switching applications
Light and appliance control
Motor and pump control
Robotics projects
Industrial automation systems
Embedded electronic projects