The DCC05 Prodigy WiFi receiver gives Android and iOS users the option to operate their Prodigy system with a smartphone or tablet. This means you have greater flexibility to control your layout both alone and with multiple controllers. The Prodigy WiFi is compatible with the JMRI Engine Driver (Android) and WiThrottle (iOS) apps. Versions of both apps are free to download so you can download the relevant app before-hand to take a look at how it works. The Apps are for operating the layout and accessories but do not allow reading or programming so keep your original handset safe. You can also use your handset and WiFi devices together simply remember to set the Cab number higher than your last handset number. This unit comes complete with the following components. 1 x Prodigy WiFi Module 1 x Connection Cable (1m) 1 x Set of Instructions Module Measurements: Length: 65mm Width: 65mm Depth: 23mm