Small size is very suitable for DIY 40P MICROBIT horizontal socket compact socket USB: 5V1A supply meets the requirements of driving force. Support 3V-5V sensor module Comes with buzzer (switch) supply mode: USB 5V 1A On-board functions: 5V1A self-recovery fuse Buzzer (PO interface) 3.5mm audio port (P0 interface) Toggle switch (used to switch buzzer music output and audio port sound output. USB switch Five gold , which are seamlessly butted with the 0, 1, 2, 3V and GND pins of microbit to protect the gold of microbit. Provide 5V and 3.3V interfaces, and support 3-5V sensor modules (onboard 5V and 3.3V indicators). Include pins 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 19, 20. Simulated feet: 0, 1, 2 Type: Microbit expansion board Usage: :bit horizontal adapter for elementary and secondary schools It supports Scratch Python programming and 3-5V sensor module. Application field: Internet of Things IoT color:Black Material:PCB size:57 x 37mm Package Contents: 1 x Expansion Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.