8 Channel Relay 5V Module With Optocoupler
₹327.00Current price is: ₹327.00. Original price was: ₹539.00.
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8 Channel Relay 5V Module With Optocoupler
The 8 Channel Relay 5V Module With Optocoupler is a high-performance automation solution designed for controlling multiple electrical devices using low-voltage microcontrollers. It is widely used in smart home systems, industrial automation, and IoT-based control applications.
This relay board allows safe switching of high-voltage devices such as lights, motors, pumps, and appliances through Arduino, ESP32, and ESP8266 platforms. Each channel operates independently, enabling flexible multi-device control in a single system.
With built-in optocoupler isolation, the module protects sensitive microcontroller circuits from voltage spikes, electrical noise, and back-EMF generated by inductive loads. This ensures stable and long-term operation in both educational and industrial environments.
How the Relay Module Works
The 8 Channel Relay 5V Module With Optocoupler operates by using a low-voltage control signal to activate an electromagnetic switch. When a digital input is received, the internal optocoupler isolates the control side from the power side and triggers the relay coil.
Each relay acts as an independent switch that can turn connected devices ON or OFF safely. This makes it suitable for automation systems requiring multiple controlled outputs.
External references:
https://en.wikipedia.org/wiki/Relay
https://en.wikipedia.org/wiki/Opto-isolator
Key Features
Multi-Channel Control
Supports eight independent relay channels for controlling multiple devices simultaneously or individually.
Optocoupler Isolation Protection
Provides electrical isolation between control and load circuits, improving safety and stability.
High Load Capacity
Each relay supports up to 250V AC at 10A or 30V DC at 10A.
LED Status Indicators
Each channel includes LED indicators for real-time operation monitoring.
Flexible Trigger Selection
Supports both high-level and low-level trigger modes depending on project requirements.
Pin Configuration
Control Side
- VCC: 5V power supply
- GND: Ground
- IN1–IN8: Control input pins
Load Side
- COM: Common terminal
- NO: Normally open terminal
- NC: Normally closed terminal
Compatibility
Arduino Boards
The relay module works seamlessly with Arduino Uno, Nano, and Mega for automation and control projects.
Arduino reference:
https://www.arduino.cc/reference/en/
Related category:
https://rudrmart.com/product-category/arduino-modules/
ESP8266 and ESP32 IoT Systems
Fully compatible with WiFi-enabled microcontrollers for remote automation, smart home control, and cloud-based switching systems.
ESP8266 reference:
https://en.wikipedia.org/wiki/ESP8266
Raspberry Pi Pico and Industrial Controllers
Suitable for advanced automation systems, industrial control panels, and embedded applications.
Raspberry Pi documentation:
https://www.raspberrypi.com/documentation/
Technical Specifications
| Parameter | Specification |
|---|---|
| Relay Channels | 8 Independent Channels |
| Operating Voltage | 5V DC |
| Trigger Type | Low/High level selectable |
| Isolation | Optocoupler based isolation |
| Switching Capacity | 250V AC / 10A, 30V DC / 10A |
| Input Current | ~15–20mA per channel |
| Indicators | 8 LED status indicators |
| Mounting | Pre-drilled PCB holes |
Applications
- Smart home automation systems
- Industrial control systems
- Automated irrigation systems
- Motor and pump control
- Conveyor belt automation
- IoT remote switching systems
- Agricultural automation
- Smart lighting systems
Frequently Asked Questions
What is the use of 8 channel relay module?
It is used to control multiple high-voltage devices using low-voltage microcontrollers like Arduino or ESP32.
Is this relay module safe for Arduino?
Yes, it includes optocoupler isolation which protects the Arduino from voltage spikes and electrical noise.
Can it control AC appliances?
Yes, it can control AC loads up to 250V and 10A per channel.
Does it support IoT control?
Yes, it can be integrated with ESP8266 and ESP32 for WiFi-based remote control systems.
Can all 8 relays work at the same time?
Yes, all channels can operate independently or simultaneously depending on your program.
| Weight | 0.65 kg |
|---|---|
| Dimensions | 10 × 2 × 2.7 cm |
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