5V Relay Module - 2 Channel
5V Relay Module - 2 Channel
5V Relay Module - 2 Channel
5V Relay Module - 2 Channel

5V Relay Module - 2 Channel

Relay
REL710
€4.50
In Stock
Immediate Dispatch
5V 2-Channel Relay Module — SPDT interface board controlled directly by Arduino or any MCU. Rated 5VDC coil, up to 10A at AC250V / DC30V, with status LEDs per channel.

 

The 5V 2-Channel Relay Module is a ready-to-use SPDT relay interface board designed for makers, engineers and hobbyists who need to switch high-current AC or DC loads from a low-power microcontroller signal. Operating on a 5V coil voltage, it connects directly to an Arduino, PLC output or any 5V-logic MCU without additional circuitry, making it one of the most popular building blocks for home automation and industrial control projects.

Key Features

  • 2 Independent SPDT Channels: Each relay provides Normally Open (NO) and Normally Closed (NC) contacts → switch two separate loads independently
  • High-Current Contacts: Rated AC 250V / 10A and DC 30V / 10A → control mains appliances, motors and solenoids safely
  • 5VDC Coil, 50–60mA Driver Current: Matches the output of standard Arduino digital pins when used with the on-board transistor driver → no external transistor needed
  • Status Indicator LEDs: One LED per relay channel shows energised/de-energised state → instant visual feedback during testing and operation
  • Standard 3-Pin Control Interface: VCC, GND, IN signal per channel → simple wiring, minimal code

Pinout & Wiring

Pin LabelSymbolDescription
VCC+5VModule power supply — connect to 5V
GNDGNDCommon ground — connect to GND
IN1Control Ch.1Digital signal to trigger Relay 1 (active LOW typical)
IN2Control Ch.2Digital signal to trigger Relay 2 (active LOW typical)
NONormally OpenLoad contact — open when relay is de-energised
COMCommonCommon load terminal
NCNormally ClosedLoad contact — closed when relay is de-energised

Wiring note: Power the module from the Arduino 5V pin, connect GND to GND, and drive IN1/IN2 from any digital output pin. The on-board driver circuit handles the 50–60mA coil current so the MCU pin is not overloaded. Always wire mains-voltage loads with appropriate insulation and fusing.

Compatibility

  • Arduino UNO / Nano / Mega: Direct connection — 5V logic and power match perfectly; use digitalWrite(pin, LOW) to energise (active-LOW configuration).
  • Raspberry Pi (via transistor buffer): RPi GPIO is 3.3V and limited current — use a level-shifter or NPN transistor stage between RPi and IN pins.
  • PLC / Industrial 5V outputs: Compatible with standard 5V sink/source PLC digital outputs.
  • Any 5V MCU (STM32, PIC, AVR): Fully compatible provided the control signal is 5V logic.

Typical Applications

  • Smart Home Automation: Turn lights, fans or appliances on/off from an Arduino or home automation controller — the classic use case for this module.
  • Industrial & PLC Control: Interface low-voltage PLC outputs to higher-voltage actuators or solenoid valves.
  • Motor On/Off Switching: Enable or disable DC motors or pumps in robotics and irrigation projects.
  • Alarm & Security Systems: Trigger sirens, door locks or notification systems based on sensor input.
  • Laboratory & Bench Switching: Automate load switching during testing without manual intervention.

Technical Specifications

ParameterValue
Interface / Control LogicDigital signal (active LOW, 5V logic)
Rated Coil Voltage5V DC
Driver Current per Channel50–60 mA
Number of Channels2
Contact ConfigurationSPDT (NO / COM / NC)
Max Contact Current10A
Max AC LoadAC 250V / 10A
Max DC LoadDC 30V / 10A
Status IndicatorsLED per channel

FAQ

Q: Can I control this relay module directly from an Arduino digital pin?
A: Yes. The on-board transistor driver circuit handles the 50–60mA coil current, so a standard Arduino digital output pin (source ~40mA max) drives the module safely without any extra components.

Q: Is it safe to switch 230V mains with this module?
A: The relay contacts are rated AC 250V / 10A, so electrically yes — however always follow local electrical safety regulations, use appropriate fusing, and ensure all high-voltage wiring is properly insulated and enclosed.

Package Contents: 1× 5V 2-Channel Relay Module

⚠ Safety Warning: This module is intended for use by persons with appropriate electrical knowledge. Switching mains (AC) voltages involves risk of electric shock or fire. Ensure the load circuit is de-energised before wiring. Keep high-voltage terminals away from children.
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