4-Channel Relay Module Board with Optocoupler Isolation
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৳ 180.00৳ 200.00 (-10%)
This high-quality 4-channel relay module board features optocoupler isolation to protect microcontrollers from high-voltage spikes. Capable of controlling loads up to 10A at 250V AC or 30V DC, it is an essential component for automated control systems, smart home setups, and custom electronics networks. The board includes onboard LED indicators for each channel to enable easy operational tracking.
Premium 4-Channel Relay Module Board with Optocoupler Isolation
Product Overview
Take control of high-power electrical circuits safely and efficiently with this premium 4-channel relay module board. Engineered as an essential interface bridge between low-voltage microcontrollers and heavy-duty electrical appliances, this module allows you to switch high-voltage loads with absolute confidence. Whether you are building an automated industrial setup, an internet-connected smart home system, or a custom robotics platform, this board delivers the stable switching performance your project requires.
With a heavy-duty design and integrated safety features, it prevents power surges from back-feeding into your delicate control logic, ensuring continuous and trouble-free operation.
Key Features & Technical Highlights
- Optocoupler Isolation Technology: The onboard photocouplers isolate the input signal circuitry from the high-voltage relay coils. This completely eliminates electromagnetic interference (EMI) and electrical noise, protecting your main controller from catastrophic voltage spikes.
- Dual Power Supply Selection (JD-VCC Jumper): Designed with a flexible power jumper configuration. You can easily choose to power the driving coils directly from your microcontroller, or remove the jumper to completely isolate the microcontroller’s power grid by using an external power source for the relays.
- Onboard LED Status Indicators: Each channel features a dedicated, highly visible SMD LED indicator light. This allows engineers and hobbyists to instantly verify the active status of every relay during operation, debugging, or routine maintenance.
- Premium Screw Terminals: Outfitted with robust, heavy-duty blue terminal blocks that accept thick-gauge wiring. The screw-clamp connections prevent loose contacts, ensuring a reliable pathway for continuous current.
Technical Specifications
- Channels: 4 independent switching channels
- AC Contact Ratings: 10A at 250V AC / 12A at 125V AC
- DC Contact Ratings: 10A at 30V DC / 12A at 28V DC
- Output Contacts: Each relay provides 3 terminal points: Normally Open (NO), Common (COM), and Normally Closed (NC)
- Mounting Holes: 4 integrated corner fixing holes for secure mechanical installation inside project boxes or electrical panels
Wide Application Compatibility
This versatile 4-channel module integrates seamlessly with modern development platforms and control systems:
- Microcontrollers: Ideal for 5V/3.3V logic platforms like Arduino, Raspberry Pi, ESP32, STM32, and PIC.
- Smart Home & IoT: Great for automated lighting, smart plugs, motorized curtains, and custom home automation hubs.
- Industrial Automation: Suitable for small-scale PLC expansion modules, valve controllers, and motor starter triggers.
- Robotics & DIY Hobbyists: Perfect for time-delay switches, power management controllers, and automated test benches.
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