Single Relay HAT
Suitable for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B, STM32, ESP32, Arduino, and other platforms
This product is a single-channel relay Raspberry Pi expansion board, suitable for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B, STM32, ESP32, Arduino, and other platforms. It features onboard optocoupler isolation and level-shifting circuits, making it compatible with 3.3V and 5V systems.
Product Features
- Power Supply Voltage: 3.3V/5V
- Relay Load Capacity: NO: 10A 250VAC/28VDC; NO/NC 5A 250VAC
- Relay Operation Indicator LED: Allows easy monitoring of relay status
- Optocoupler Isolation Circuit: Strong anti-interference capability, stable operation
- Open-source Example Programs: Provided for Raspberry Pi and Arduino development boards
Product Specifications
| Dimensions | 45mm (Length) x 28mm (Width) |
| Weight | 100g (Net Weight: 21g) |
| Supply Voltage | 3.3V&5V |
| Optocoupler | LTV-357T-B-IN |
| Trigger Level | Low-level Trigger |
Resource Overview
1. Power Indicator LED
2. Relay
3. Relay Output Terminal
4. Relay Operation Indicator LED: When the LED is on, it indicates the relay's normally open terminal is closed, and the normally closed terminal is open. When the LED is off, the normally open terminal is open, and the normally closed terminal is closed.
5. Relay Control Signal Level Selection Switch: Can be set to VCC or 3V3
6. PH2.0 1x3P Connector
7. 2.54mm 1x3P Pin Header
The relay wiring diagram is shown below:
When the STATE LED is on, it indicates the
relay's normally open terminal is closed, and
the normally closed terminal is open.
When the realy working indicator LED is off,
the normally open terminal is open, and the
normally closed terminal is closed.
Dimensions
Note: the above dimensions are measured manually, there is an error of about 1 mm
Wiki
Single-channel Relay HAT Expansion Board
Package Contents
1. Relay HAT x 1
2. PH2.0 to Dupont Female Cable 20cm x 1
