ALLNET 4duino Button Description: The Me 4 button V1.0 is ideal for all types of projects. It can work as a function key or directional key to control your robots. There are 4 buttons on the circuit board that have a large "click" to them. They all share an analog output and reflect different analog values ​​via the buttons. You can easily connect the Me 4 Button V1.0 to Me Baseboard V1.0 or Me BaseShield V2.0 using a 6 pin RJ25 cable. Features: Four buttons One status display and one energy display 16mm interval M4 mounting holes, compatible with Makeblock components 2.54mm breakout pins for connecting to cables Easy wiring with 6 pin RJ25 interface Specification: Rated voltage: 5V Dimensions: 24x48x16mm (LxWxH) Documents: Arduino Library Scope of delivery: 1x Me 4 Button V1.0