1-channel Relay

admin — Thu, 20 Nov 2025 19:51:56 +0000

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

Supports both AC and DC loads
Optocoupler isolation for noise protection (on opto-isolated version)
Works with 3.3V and 5V logic
High-quality relay with long lifespan
Status indication LED
Screw terminals for secure wiring
Suitable for microcontroller-based automation

Variants

Standard Relay (No optocoupler)
Optocoupler Isolated Relay
5V Relay Module
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

Smart home automation
Lighting control
Motor and pump switching
HVAC control
Industrial automation
IoT smart switches
Remote power control
Security systems

Compatible Boards