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
- Operating Voltage: 3.3V&5V
- Maximum Load per Relay: 250V/5A
- Each relay has a working indicator light for easy monitoring of relay status
- Opto-isolated circuit for strong anti-interference capability and stable operation
- Designed based on Raspberry Pi 40-pin GPIO interface header, suitable for Raspberry Pi series boards
- Provides open-source example programs for Raspberry Pi development boards
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
