Description
The 1-Channel Relay Module is a compact, high-quality electromechanical switch designed for controlling high-voltage AC or DC devices using low-voltage logic signals. It can be triggered by microcontrollers such as Arduino, ESP8266, ESP32, STM32, Raspberry Pi, and other logic-level systems.
The relay provides electrical isolation between the control circuit and the high-voltage load, making it suitable for home automation, industrial control, and smart IoT applications.
Key Features
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Supports both AC and DC loads
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Optocoupler isolation for noise protection (on opto-isolated version)
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Works with 3.3V and 5V logic
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High-quality relay with long lifespan
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Status indication LED
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Screw terminals for secure wiring
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Suitable for microcontroller-based automation
Variants
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Standard Relay (No optocoupler)
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Optocoupler Isolated Relay
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5V Relay Module
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3.3V Relay Module
Specifications
| Feature | Details |
|---|---|
| Relay Voltage | 5V or 3.3V (depending on variant) |
| Trigger Voltage | 3.3–5V |
| Contact Rating | 10A @ 250VAC / 10A @ 30VDC |
| Control Signal Type | Low-level or high-level trigger (depends on model) |
| Output | NO, NC, COM |
| Isolation | Optional optocoupler |
| Indicators | Power LED & Relay status LED |
| Mounting | PCB mount / Screw terminals |
Applications
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Smart home automation
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Lighting control
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Motor and pump switching
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HVAC control
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Industrial automation
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IoT smart switches
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Remote power control
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Security systems
Compatible Boards
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Arduino Uno / Mega / Nano
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ESP8266, Wemos D1 Mini
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ESP32 DevKit
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Raspberry Pi (any model)
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STM32 series
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PIC / AVR / ARM boards
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