4 Channel 5V Relay Module with Optocoupler

4 Channel 5V Relay Module with Optocoupler

The 4 Channel 5V Relay Module with Optocoupler is a reliable and widely used switching module designed for microcontroller and automation projects. It allows low-voltage devices like Arduino, ESP32, Raspberry Pi, and other development boards to safely control high-voltage AC or DC appliances. The module is equipped with high-quality relays and optocoupler isolation for improved protection and stable performance.

This relay module is ideal for home automation, industrial control systems, IoT applications, robotics, smart switching systems, and embedded electronics projects. Each relay can independently control devices such as lights, motors, pumps, fans, solenoids, and other electrical equipment.

The onboard optocoupler isolation helps protect sensitive microcontrollers from voltage spikes and electrical interference, making the module more reliable and safer for long-term operation. It also includes LED indicators for each relay channel to provide easy status monitoring during operation.

At RoboCircuitHub, we provide quality-tested electronic components suitable for students, makers, engineers, and professionals working on innovative embedded and IoT solutions. This module offers easy interfacing, stable operation, and excellent compatibility with most development platforms.

Specifications

• Operating Voltage: 5V DC
• Relay Channels: 4 Channel
• Trigger Voltage: 5V TTL Signal
• Optocoupler Isolation: Yes
• Relay Type: Electromagnetic Relay
• Maximum AC Load: 250V AC / 10A
• Maximum DC Load: 30V DC / 10A
• Compatible Boards: Arduino, ESP32, Raspberry Pi, STM32, PIC
• Status Indicators: LED for each relay
• Input Interface: Standard header pins
• Mounting Holes: Available for easy installation
• PCB Material: High-quality FR4 PCB

Applications

• Home Automation
• Smart Pump Controller
• Industrial Automation
• Robotics Projects
• IoT Switching Systems
• Remote Appliance Control
• Smart Water Management Systems
• DIY Electronics Projects

RoboCircuitHub offers reliable electronic modules and embedded solutions for developers, innovators, and learners building next-generation smart systems.