# KS4030 Keyestudio Micro：bit IO Port Expansion Sensor Shield with Level Conversion

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## 1. Description

When we are doing DIY experiments, we often use the Micro:bit control boards and sensor u[. In order to facilitate the wiring-up, the Micro:bit expansion board are led out the pins for the connection of control board, motors and sensors. Due to anti-reverse interfaces and the fixed wire sequence, the sensor/module won’t burn out. 

The expansion board has 2.54mm anti-reverse interfaces with silk screen. We supply power through the on-board PH2.54 lithium battery box and an micro USB cable. The power supply voltage is 3.3~5V. In addition, it comes with four 3mm positioning holes, which is convenient to fix on other devices.

## 2. Specification

- Working voltage: 3.3V~5V
- Current: 500mA
- Maximum power: 2.5W
- Weight: 25.1g
- Operating temperature range: 0~50°C
- Interface: 2.54mm anti-reverse interface
- Size: 70.2*56*1.6mm
- Hole diameter: 3mm

## 3. Schematic Diagram

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## 4. Pin out

![=](media/image-20251117095801322.png)

## 5. Test Results

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