5V 4-Channel Relay Module with Optocoupler Isolation
4-channel relay interface board capable of controlling up to 4 high-voltage appliances simultaneously with active-low optical isolation.
5V 4-Channel Relay Module with Optocoupler Isolation is an authentic, engineering-grade hardware component designed for prototyping, robotics, and academic research. Includes verified schematics, pre-tested hardware, and nationwide express shipping across Pakistan.
The 5V 4-Channel Relay Module is the cornerstone of multi-room home automation and industrial control panels. It packs four 10A relays with individual optocouplers on a single clean PCB.
Key Engineering Features:
- Independent 4-Channel Control: Switch four separate 220V AC or 12V DC loads independently.
- Dedicated Optocouplers: Each channel has an independent PC817 optocoupler and freewheeling diode.
- Separate JD-VCC Jumper: Enables complete physical power rail separation between microcontroller logic and relay coils.
- LED Indicators: 4 separate status LEDs indicate the state of each individual relay channel.
Common Engineering Applications:
- Multi-appliance smart home automation boards (Alexa / Blynk / Home Assistant)
- Agricultural smart greenhouse multi-zone irrigation solenoid valves
- Industrial sequencing panels and pneumatic valve banks
- Automated AC distribution power boxes
What's Included in the Package:
- 1x 5V 4-Channel Optocoupled Relay Board with Terminal Blocks and Status LEDs
Quick Build & Interfacing Guide:
Unbox and verify all pre-tested sensors, microcontrollers, and wiring components included in your package.
Secure mechanical brackets, servos, and modules to the main frame using the provided mounting hardware.
Interface VCC, GND, and GPIO signal lines according to the verified schematic diagram provided with the kit.
Upload the tested source code via Arduino IDE, Python, or ESP-IDF and verify live sensor readings and actuation.
Need a Custom 3D Printed Casing or Multilayer PCB?
Get custom snap-fit enclosures and robotics parts printed via our custom 3D printing service in Lahore & Pakistan, or order industrial double-sided circuit boards through our custom PCB fabrication service with nationwide delivery.
Key Features
Specifications
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