4 Channel Arduino Relay Shield
We have ✅ 2 available of the DF-DFR0144 in our Sydney warehouse. An extra 210 units available with a short lead time.
This 4-channel relay shield from DFRobot plugs directly onto an Arduino Uno or compatible board, providing opto-isolated relay switching for controlling high-power devices such as lamps, water pumps, and motors. Each relay has its own test button and LED status indicator.
The shield features a built-in XBee socket for wireless remote control via XBee, Bluetooth, or WPM modules. The relay control pins are selectable (default: digital 2, 7, 8, 10), and an external 9V power supply is required to drive the relays and XBee module.
Key Features
- 4 Relay Channels – Opto-isolated for safe microcontroller interfacing
- Arduino Uno Compatible – Plugs directly onto Rev3 boards
- XBee Socket – Built-in support for wireless remote control
- Test Buttons – Individual test button for each relay
- LED Indicators – Status LEDs show relay state
- Selectable Control Pins – Default digital 2, 7, 8, 10
Specifications
- Contact Rating – 3A @ 120V AC / 24V DC
- Max Switching Voltage – 240V AC / 60V DC (below 38V recommended)
- Max Switching Current – 5A
- Max Switching Power – 360VA AC / 90W DC
- Coil Voltage – 9V DC
- Electrical Life – Min 100,000 operations
- Mechanical Life – Min 10,000,000 operations
- I/O – 6 analogue + 13 digital channels
- Operating Temperature – −30°C to +85°C
- Operating Humidity – 40–85%
- Safety Standards – UL, cUL, TUV, CQC
- Dimensions – 95 × 65mm
Ideal For
- Home automation systems
- Robotics and motor control
- Wireless relay switching via XBee
- Arduino-based switching projects
Package Contents
- 1× Relay shield for Arduino V2.1
- 2× Nylon standoffs with screws
Resources
The 4 Channel Arduino Relay Shield appears in the following collections:
