This is a 4-channel optocouplers-isolated relay Arduino UNO Shield, capable of controlling high-power devices operating at AC 240V 5A or DC 24V 5A for each channel. In a home automation project, relay modules play a crucial role in managing devices such as lights, pumps, garage doors, speakers, power outlets, and fans. However, traditional relay modules are burdened by space requirements, intricate wiring, and a potential for unreliable operation. Moreover, low-quality relay modules lacking optocouplers isolation compromise the safety of the entire project.

By adopting the Arduino Shield approach, this product not only eliminates the need for complex wiring but also provides a substantial boost to project reliability. Through the integration of a 4-channel relay, it enables an Arduino UNO mainboard to exercise comprehensive control over a diverse range of devices.

Features

·       Compatible with Arduino UNO Rev3

·       Each Relay has its own test button to test the connection

·       Standard DFRobot 3 Pin out

·       XBee I/O direct control

Specification

·       Compatible with Arduino UNO Rev3

·       4 buttons to test module

·       LED status indicator of relay

·       Support Xbee IO directly control

·       Xbee socket for wireless communication

·       Selectable digital IO pin for control (Default digital 2,7,8,10) 

·       6 channels Analog IO & 13 channels Digital IO 

·       Up to 4 Relay with photo-coupled circuit

·       Contact Rating  3A AC 120V / DC 24V

·       Max Switching Voltage  AC 240V / DC 60V (Less than 38V is recommended)

·       Max Switching Current  5A

·       Max Switching Power  AC 360VA / DC 90W

·       Electrical Life (Min)  100,000 Operations

·       Mechanical Life (Min)  10,000,000 Operations

·       Safety Standard(relay)  UL cUL TUV CQC

·       Coil Working Voltage  9VDC

·       Working temperature  -30℃ to +85℃

·       Working Humidity  40% - 85%

·       Size: 95x65mm

Projects

Project1. IR Home Automation based on DFRobot's Relay Shield