4-Channel 5V 10A Relay Module with Optocoupler – High-Current Switching with Electrical Isolation

The 4-Channel 5V 10A Relay Module with Optocoupler is a high-quality switching solution for controlling up to four high-voltage devices using low-voltage microcontrollers like Arduino, Raspberry Pi, ESP32, and more. Built-in optocouplers provide reliable electrical isolation, protecting your development board from voltage spikes, surges, and interference.

Each channel can be controlled independently and supports both high and low-level triggers, making the module suitable for a wide range of DIY, IoT, and industrial automation applications.

Key Features:

• ✅ Operating Voltage: 5V DC

• ✅ Channels: 4 Independent Relays

• ✅ Relay Output Rating: 10A @ 250V AC or 30V DC

• ✅ Trigger Modes: High-level and low-level compatible

• ✅ Isolation: Optocoupler per channel for safe signal separation

• ✅ Status Indicators: LEDs for power and individual relay activity

• ✅ Control Interface: Standard input headers for VCC, GND, IN1–IN4

• ✅ Mounting: Pre-drilled holes for easy installation in control systems

Applications:

• Home automation (lights, fans, appliances)

• Industrial equipment control

• Smart agriculture systems

• IoT and wireless control projects

• AC/DC motor or pump control

• Security systems and alarms

Benefits:

• 🛡️ Optocoupler Isolation – Protects microcontroller and signal circuits

• ⚙️ Multiple Device Control – Operate 4 separate high-power devices

• 🔧 Universal Compatibility – Works with Arduino, Raspberry Pi, ESP8266, STM32, and more

• ⚡ High Current Switching – Supports heavy loads up to 10A

Package Includes:

• 1 x 4-Channel 5V 10A Relay Module with Optocoupler

⚠️ Note:

This module handles high voltages. Proper care and electrical insulation are essential during installation. Use protective gear and isolate the AC side from low-voltage circuits.