Relay HAT Expansion Board

Relay HAT Expansion Board

Relay HAT Expansion Board

Relay HAT Expansion Board

Single-channel 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

Product Specifications

Dimensions45mm (Length) * 28mm (Width)
Weight100g (Net Weight: 21g)
Power Supply Voltage3.3V/5V
OptocouplerLTV-357T-B-IN
Trigger LevelLow-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 STATE LED is on, it indicates the

relay's normally open terminal is closed, and

the normally closed terminal is open.

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

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