3V 1/2/4-Channel Relay Module Low-Level Trigger for Arduino

$11.62 $15.72

3V 1/2/4-Channel Relay Module – Low-Level Trigger, Arduino Compatible

Take full control of high-voltage circuits from your microcontroller with this compact and reliable 3V Relay Module. Available in 1, 2, or 4-channel configurations, this low-level trigger module is designed for seamless integration with Arduino, Raspberry Pi, and other popular microcontroller platforms. Whether you're automating a home project, building a robotics system, or prototyping an industrial controller, this relay module delivers dependable switching performance in a convenient, easy-to-mount form factor.

Made in Mainland China.

Key Features

High Load Capacity: Supports up to 250V AC / 10A and 30V DC / 10A for versatile load switching across a wide range of applications.
8550 Transistor Drive: Provides robust drive capability ensuring stable and consistent relay actuation.
Low-Level Trigger: Active-low control signal makes it directly compatible with 3.3V and 5V logic microcontroller I/O pins.
Status Indicator LEDs: Green power indicator and red relay status indicator for at-a-glance operation monitoring.
Blue KF301 Terminal Blocks: Screw-terminal connectors for quick and secure control wiring.
Mounting Holes: Fixed bolt holes for easy and secure installation in enclosures or project panels.
Low Power Consumption: Energy-efficient design ideal for battery-powered and embedded projects.

Electrical Specifications

Operating Voltage: 3V DC (VCC)
Max AC Load: 250V / 10A
Max DC Load: 30V / 10A
Trigger Type: Low-Level (Active Low)
Channels: Available in 1, 2, or 4-channel variants

Wiring Guide

VCC: Connect to an external 3V power supply
GND: Connect to external ground (GND)
IN (Relay Control): Connect to microcontroller I/O port — pull LOW to activate relay

Package Contents

1× Relay Module (1, 2, or 4-channel as selected)

Frequently Asked Questions

Q: Is this 3V relay module compatible with Arduino and Raspberry Pi?

A: Yes! The 3V low-level trigger relay module is fully compatible with Arduino, Raspberry Pi, ESP8266, ESP32, and most other 3.3V or 5V microcontroller platforms. Simply connect the IN pin to any digital I/O port and pull it LOW to activate the relay.

Q: What is the difference between the 1, 2, and 4-channel versions?

A: The channel count refers to how many independent relay switches are on the module. A 1-channel module controls one circuit, a 2-channel controls two, and a 4-channel controls four separate circuits simultaneously — ideal for more complex automation and switching projects.

Q: What loads can this relay module switch?

A: This module can handle AC loads up to 250V / 10A and DC loads up to 30V / 10A, making it suitable for controlling household appliances, lighting, motors, solenoids, and other moderate-power devices from a low-voltage microcontroller signal.

Q: Does the relay module require any additional components to operate?

A: No additional components are required for basic operation. Simply supply 3V to VCC, connect GND, and wire the IN pin to your microcontroller's digital output. The onboard 8550 transistor driver and LED indicators are already integrated on the module.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.