Relay Module

Relay Module
  • Relay Module
  • Relay Module

Relay Module

Code: MR009-001.2
This Relay Module is compatible with Arduino, it uses an optocoupler to grant galvanic insulation, and it can drive a load up to 7A 250VAC.


This Relay Module is a module designed to allow you to control a single relay in a very simple and intuitive manner. Being compatible with Arduino, the most immediate way to use it is to connect it to an Arduino board using flexible jumpers.

Exploiting the characteristics of the relay mounted on the module and through the use of an Arduino digital I/O pin, it is possible to control motors, inductive loads and other devices; this product is therefore fundamental in domotics projects or, more in general, in robotics projects.

The module is equipped with an optocoupler on the IN line in such a way that it ensures the galvanic insulation between the relay load and the control board which drives this module.


Supply voltage +5V
Supply current 72mA typ. (75mA max.)
Current on pin IN 14mA typ.
Rated load 7A 250VAC
Operating temperature -30°C / +70°C
Operate time max. 10ms Max.
Release time max. 5ms Max.
Insulation resistance 100Mohm Min.
Mechanical Life Expectancy 10,000,000 operations
Electrical Life Expectancy 10,000 operations
Dimensions 1.2” x 1.2” (30.5 x 30.5 mm)
Weight 0.5 oz (14.2g)


 datasheet (Inglese)

 datasheet (Italiano)

Useful Links

Relay Module test sketch


  1. 1
    3-pin JST 12" Cable
    Code: MR008-002.1
    This 12" (300mm) long 3-pin JST cable is composed of 3 conductors with a 0.1" (2,54mm) spacing female socket on one end and a 3-pin JST connector on the other end; is suitable to interface many devices that have interconnections via JST header.


  1. 1
    WiFi Relay Shield
    Code: MR007-002.3
    The Relay Shield is an Arduino compatible module that provides an easy way to control high voltage thanks to 4 independent channels equipped with photo-coupled mechanical relays preassembled on the board. It includes a WiFi ESP8266 module connector.
  2. 2
    Relay Module 2-Channel
    Code: MR009-004.2
    This Relay Module 2-Channel is compatible with Arduino, it uses two optocouplers to grant galvanic insulation, and it can drive a load up to 7A 250VAC per channel.