1 Channel 5V Relay Board Module

Overview

1 Channel 5V Relay Board Module is a compact and versatile switching module designed for student, hobby, and electronic automation projects. It allows low-voltage microcontrollers like Arduino, ESP32, and Raspberry Pi to safely control high-voltage and high-current electrical appliances such as lights, fans, pumps, and motors.

Features

• Supports 5V DC operating signal from microcontrollers
• Capable of controlling up to AC 250V/10A or DC 30V/10A loads
• Built-in optocoupler / transistor driver for safe signal isolation
• Standard 3-pin control interface (VCC, GND, IN)
• Status LED indicator for relay switching state (ON/OFF)
• NO (Normally Open), NC (Normally Closed), and COM (Common) screw terminals for easy wiring
• Low trigger / High trigger support depending on the module variation
• Compatible with Arduino, ESP32, Raspberry Pi, PIC, and AVR microcontrollers
• Suitable for home automation, robotics, and industrial switching projects

Applications

• Home automation and smart home systems for controlling lights, fans, and household appliances
• Microcontroller-based student and university projects requiring AC/DC power control
• Automated plant watering systems paired with soil moisture sensors and water pumps
• Industrial control panels, remote switches, and solenoid control systems
• Safety alarms, emergency shut-off systems, and power-cut automation
• Robotics and IoT projects requiring high-power device switching
• Science fairs, electronics prototyping, and DIY hardware experiments

Important Notes:

• Always connect the relay module's GND to the microcontroller's GND for a common signal reference.
• Exercise extreme caution when working with high-voltage AC mains (110V–220V) to prevent electrical shock or damage.
• Do not exceed the rated current (10A) and voltage limits of the relay contacts.
• Ensure the power supply provides stable 5V power to prevent erratic relay clicking or switching failures.
• Check whether your relay module triggers on a High or Low logic signal before uploading your microcontroller code.
• Properly insulate all high-voltage connections and terminals using protective enclosures or heat-shrink tubing.

Package includes

• 1 x 1 Channel 5V Relay Board Module