This product is a 4-channel relay expansion board for Raspberry Pi, based on the Raspberry Pi 40-pin GPIO interface header. It is compatible with Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B. The board is equipped with four relays that can be controlled individually to turn on and off.
Product Features
- Raspberry Pi Compatibility: Features a standard 40-pin GPIO extension header, ensuring seamless integration with Raspberry Pi series boards.
- High-Performance Relays: Equipped with high-quality relays capable of handling up to 5A at 250V AC or 5A at 30V DC, ideal for controlling a wide range of devices.
- Isolation Protection: Utilizes photo coupling isolation to safeguard the board from interference caused by high-voltage circuits, ensuring reliable operation.
- Status Indication: Onboard LEDs clearly display the status of each relay for quick visual feedback.
- Customizable Control: Relay control jumper allows for flexible configuration, enabling relay control via custom GPIO pins rather than the default ones.
- Comprehensive Development Support: Includes development resources and example code for popular libraries and frameworks, facilitating easy integration into projects.
Product Specifications
| Size | 65mm(Length) x 56mm(width) |
| Optocoupler | LTV-357T-B-IN |
| Supply voltage | 3.3V&5V |
Resource Profile
- ① Relay Output Terminal
- ② Relay
- ③ Specified Pin Selection jumper header: short status indicates the relay is connected to the specified control pin; open status indicates users can connect to other pins through jumpers.
- ④ Raspberry Pi 40-pin GPIO Interface header
- ⑤ Relay Working Indicator LED: When lit, it signifies the relay's normally open (NO) contact is closed and the normally closed (NC) contact is open. When off, it indicates that the normally open (NO) contact is open and the normally closed (NC) contact is closed.
Relay wiring diagram
WIKI
Package Contents
- 4-CH Relay HAT x1
- Accessory pack
