micro:bit control boards are becoming increasingly popular in the education market. However, a single micro:bit control board is not easy to test with other sensor modules. We have developed this keyestudio sensor expansion board V2 specifically for micro:bit. The Sensor-Shield V2 breaks all PIO ports on the micro:bit control board into a 3PIN interface (GND, VCC, Signal), which makes the connection between the micro:bit control board and other sensor modules very easy. In addition, it also extends some commonly used serial communication interfaces in pin or socket headers with 2.54mm pin pitch, such as I2C and SPI communication pins. This shield enables communication between the micro:bit control board and other communication devices. You can power the micro:bit board via a black DC socket (DC 7-9V) or a mciro USB port (DC 5V) on the shield. When supplying power to the sensor, you can choose the supply voltage 3.3V or 5V via jumper cap V1 and V2.