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4-Channel Relay & Opto-Isolated Input Board – Compoden
Rs. 520.00
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4 Channel Relay & Opto-Isolated Input Board
This board integrates four 10A SPDT relays and four independent opto-isolated digital inputs on a single PCB. It safely links low‑voltage microcontrollers to high‑power AC or DC devices while the optocouplers protect your controller from ground loops and voltage spikes. Ideal for appliance control, machine sensing, and automation projects.
Key Specifications
| Specification | Value |
|---|---|
| Relay Channels | 4 (each SPDT – NO, COM, NC) |
| Relay Coil Voltage | 5V DC |
| Max Switching Load | 10A @ 250VAC / 10A @ 30VDC |
| Opto‑Isolated Input Channels | 4 (on‑board LED indicators) |
| Input Signal Voltage | 3V – 24V DC (optocoupler active) |
What You Can Build With This
- Home appliance scheduler – turn lights, fans, or heaters on/off from a smartphone
- Automated greenhouse – control water pumps and read soil‑moisture sensors simultaneously
- Garage door opener with limit‑switch feedback for fully automatic operation
- Industrial status panel – monitor machine sensors (proximity, push‑buttons) and trigger alarms or relays
Compatibility
Designed for any 3.3V or 5V controller pin – works directly with Arduino Nano, Uno,
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
What you can build with this
ESP32 WiFi Relay Controller Kit with ESP32 + Relay
ESP32 Aquarium Automation Kit - Web-Controlled Relay System by Compoden
ESP32 Industrial Relay Control Kit
IR Controlled Home Theatre Switcher Kit with Arduino Uno + Relay
Programmable Power Strip Kit with Arduino Uno + Relay
Home Automation MQTT Hub Kit with ESP32 + DHT22
Home Automation MQTT Hub Variant 15 Kit with ESP32 + DHT22
Multilingual Keyword Appliance Controller Kit with ESP32 + Relay
Python Sensor Logger with Arduino Real-Time Control
SSH Remote Lab Instrument Controller
Pi Pico W Voice Command Relay
Pi 4 Node-RED Smart Home Kit with Raspberry Pi 4 + DHT22
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items