The 5V Single-Channel Relay Interface Board (10A Rated) is a compact relay module designed to allow low-voltage control systems such as Arduino, ESP32, ESP8266, Raspberry Pi, and other microcontrollers to switch higher-voltage or higher-current electrical loads. The module uses a 5V electromechanical relay and an interface circuit that makes it convenient to control AC or DC loads from a digital control signal.
The onboard relay provides electrically isolated switching between the control circuit and the switched load when used according to the relay's isolation and wiring specifications. The relay contacts provide Normally Open (NO), Normally Closed (NC), and Common (COM) connections, allowing the module to be configured for different switching requirements. This makes it possible to turn a load ON when the relay is activated or keep a load connected until the relay is triggered, depending on the selected contact.
The module is designed for a 5V supply and typically provides a simple control interface consisting of VCC, GND, and an input signal pin. When the input is activated according to the module's trigger configuration, the onboard relay coil is energized and the relay contacts change state. An onboard indicator LED is commonly provided to show the relay activation status, making troubleshooting and monitoring easier during development.
With a relay contact rating of up to 10A under specified conditions, this module can be used for switching suitable lamps, fans, motors, solenoids, pumps, power supplies, and other electrical loads. The actual allowable current and voltage depend on the relay contact rating, load type, wiring, enclosure, and safety requirements. Inductive loads such as motors and solenoids may require additional suppression components.
The 5V Single-Channel Relay Interface Board is suitable for electronics hobbyists, engineers, automation developers, students, robotics enthusiasts, and DIY makers. It can be used in home automation, industrial control prototypes, IoT systems, Arduino projects, ESP32 projects, lighting control, motor control, appliance switching, and other applications where a low-voltage controller needs to operate an electrically separate load.
5V Single-Channel Relay Module
Single Electromechanical Relay
10A Rated Relay Contact
5V DC Relay Coil
Low-Voltage Control Interface
Suitable for Arduino
Compatible with ESP32
Compatible with ESP8266
Compatible with Raspberry Pi
Suitable for Microcontroller Projects
Normally Open Contact
Normally Closed Contact
Common Contact
NO, NC and COM Terminals
Suitable for Low-Voltage Load Control
Compact PCB Design
Onboard Relay Driver Circuit
Onboard Indicator LED
Easy Three-Pin Control Interface
Simple VCC, GND and IN Connection
Suitable for Automation Systems
Ideal for DIY Electronics
Suitable for Educational Projects
Easy to Integrate
Compact and Lightweight
Reliable Mechanical Switching
Suitable for Prototyping
Useful for Remote Switching Applications
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