4 Channel 5V Relay Module with Optocoupler – High/Low Trigger for Arduino & Microcontrollers

Tired of manually switching high-voltage devices in your automation projects? The amiciKart 4-Channel 5V Relay Module lets your Arduino or any microcontroller safely control mains-powered lights, motors, pumps, and appliances — no extra circuitry needed.

This relay module is built for makers who mean business. Each of the 4 independent channels can switch loads up to AC 250V / 10A and DC 30V / 10A, making it powerful enough for real-world home automation, industrial prototypes, and IoT builds. The onboard optocoupler isolation creates a hard electrical barrier between your delicate microcontroller and the high-voltage side — protecting your Arduino from dangerous back-EMF spikes and mains transients that can fry unprotected boards in seconds.

Flexibility is built in: a simple jumper lets you select High-Level or Low-Level trigger mode, so the module plays nicely with virtually every 5V microcontroller — Arduino Uno, Mega, ESP8266, ESP32, Raspberry Pi GPIO, and more. The compact PCB footprint slots neatly into breadboard setups, project enclosures, and prototype boxes without crowding your workspace. Screw-terminal connectors make wiring fast and secure, even for beginners.

Whether you're building a smart home switch panel, an automated irrigation controller, or a lab test rig, this module gives you professional-grade control at a hobbyist-friendly level.

Backed by a 1-year warranty and direct support from the amiciKart team via WhatsApp, call, or email — you're never left troubleshooting alone. 📞 980-970-9898 | ✉️ care@amicikart.com. Ships same day for orders before 2 PM, with free delivery across India.

• 🔒 Safe High-Voltage Control – Switch AC 250V/10A or DC 30V/10A loads effortlessly from any 5V Arduino or microcontroller without risking your board
• ⚡ Built-In Optocoupler Isolation – Electrical isolation between control and load circuits protects your sensitive MCU from dangerous mains spikes and voltage surges
• 🔄 High/Low Trigger Selectable – Easily toggle between High-Level and Low-Level trigger modes, making this module compatible with virtually any microcontroller or circuit design
• 🏠 4 Independent Channels – Control up to 4 separate devices (lights, pumps, motors, appliances) simultaneously; compact board fits neatly into tight project spaces and prototypes
• 🔌 Plug-and-Play with Arduino – Designed for seamless integration with Arduino Uno, Mega, Nano, Raspberry Pi, and other popular microcontroller platforms — no extra components needed
• 🛡️ 1-Year Warranty & Dedicated Support – Backed by amiciKart's 1-year warranty with direct support via WhatsApp, call (980-970-9898), or email (care@amicikart.com)
• 🚚 Free Pan-India Shipping | Same-Day Dispatch | 30-Day Easy Returns | COD Available – Order before 2 PM for same-day dispatch; delivered in 3–5 business days anywhere in India