4 Channel 12V Relay Module with Optocoupler

The 4 Channel 12V Relay Module with Optocoupler is a high-quality module built for projects that require reliable and isolated control of AC and DC devices. It integrates four powerful relays, each isolated using optocouplers to protect your microcontroller boards from electrical surges and interference.

Compatible with Arduino, ESP32, Raspberry Pi, STM32, and other microcontrollers, this module is a must-have for building smart homes, DIY automation systems, and industrial control units. Designed with user safety and stability in mind, it supports heavy loads and frequent switching operations without failure.

Each relay is equipped with an LED indicator, allowing users to easily identify the relay’s status during operation. With easy-to-use screw terminals and a solid PCB design, the 4 Channel 12V Relay Module is easy to integrate into any project.

Buy the best quality 4 Channel 12V Relay Module with Optocoupler now from eleberric.com, Sri Lanka’s trusted electronics store, and start building advanced control systems today.

Specifications

• Relay Channels: 4 Independent Relays

• Operating Voltage: 12V DC

• Control Signal Voltage: 12V (Active Low Trigger)

• Relay Output Type: SPDT (Single Pole Double Throw)

• Maximum Switching Voltage: 250V AC / 30V DC

• Maximum Switching Current: 10A

• Isolation Method: Optocoupler for each channel

• LED Indicators: Individual LEDs for each relay (ON/OFF Status)

• Input Pins: IN1, IN2, IN3, IN4, VCC, GND

• Control Logic: Active Low

• Mounting Holes: Yes, for easy installation

• Board Dimensions: Approx. 75mm × 55mm × 18mm

• Weight: Approx. 50g

Key Features

• Supports independent control of 4 devices simultaneously

• Optocoupler isolation ensures safe microcontroller interfacing

• Robust relays can handle high-voltage and high-current loads

• Screw terminals for firm and easy wiring

• LED indicators for real-time relay status monitoring

• Suitable for AC 110V/220V or DC 12V/24V device control

• Compact design for easy placement in any project

• Highly durable PCB construction for long-term use

• Fully compatible with Arduino, NodeMCU, ESP32, and Raspberry Pi

Applications

• Smart home and home automation systems

• Industrial machine control and factory automation

• Remote device control through wireless modules

• IoT-based energy management systems

• Motor control and automation projects

• Security systems like alarms, door locks, and sirens

• Agricultural automation (pumps, irrigation)

• Lighting systems for smart energy management

Shop now for the best price on the 4 Channel 12V Relay Module with Optocoupler from eleberric.com – Sri Lanka’s trusted source for Arduino and electronics supplies! Build, automate, and innovate with confidence.