A compact and reliable relay switching module designed for controlling high-voltage and high-current electrical devices using low-voltage microcontrollers. Featuring a 5V relay with switching capability up to AC 250V 10A or DC 30V 10A, this module enables Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and other development boards to safely control lamps, fans, pumps, motors, home appliances, and automation systems.

The HW-48 relay module provides electrical isolation between control circuits and high-power loads, making it an ideal solution for smart home automation, IoT projects, industrial control systems, robotics, and DIY electronics applications. Its compact PCB design and standard pin layout allow easy integration into prototypes and finished products.

Designed for simple plug-and-play operation, the module can be connected directly using DuPont jumper wires, making it suitable for beginners, students, makers, engineers, and automation professionals.

Features:

• High-quality 5V relay module

• HW-48 compact relay board design

• Supports high-power AC and DC load switching

• Compatible with Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and other microcontrollers

• Electrical isolation between control and load circuits

• Easy DuPont wire connection

• Low-power control signal operation

• Fast and reliable switching performance

• Compact PCB for easy installation

• Durable relay contacts for long service life

• Suitable for automation and remote switching applications

• Ideal for smart home and IoT projects

• Stable and reliable operation

• Easy integration into DIY electronics projects

Featured by BDTronics

BDTronics supplies tested relay modules, automation components, and development accessories for engineers, students, hobbyists, and IoT developers. The HW-48 Mini Relay Module is selected for its reliability, compact size, and dependable switching performance.

Specifications:

• Model: HW-48

• Relay Type: Single Channel Relay

• Control Voltage: 5V DC

• Relay Channels: 1

• Maximum AC Load: 250V AC, 10A

• Maximum DC Load: 30V DC, 10A

• Trigger Voltage: 5V

• Control Interface: Digital Signal Input

• Connection Type: DuPont Compatible Pins

• PCB Type: Compact Printed Circuit Board

• Application: High-Voltage Load Switching

How to Use:

• Connect VCC to the 5V supply of the microcontroller

• Connect GND to system ground

• Connect the signal pin to a digital output pin

• Connect the electrical load to the relay COM and NO/NC terminals

• Upload the control code to the microcontroller

• Send HIGH or LOW signals depending on trigger configuration

• The relay will switch connected devices ON or OFF

• Verify wiring before applying mains voltage

Applications:

• Arduino automation projects

• ESP32 smart home systems

• ESP8266 IoT projects

• Home appliance control

• Light switching systems

• Fan control circuits

• Water pump automation

• Motor switching systems

• Industrial automation

• Security systems

• Smart irrigation systems

• Remote power control

• Robotics projects

• Home automation controllers

• Electronic control panels

• DIY electronics projects

Advantages:

• Safe switching of high-voltage devices

• Easy microcontroller integration

• Compact and lightweight design

• Reliable relay operation

• Supports both AC and DC loads

• Ideal for automation projects

• Simple wiring and installation

• Long relay lifespan

Package Includes:

• 1 × Mini Relay Module 5V HW-48

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