Single-family kit for Simplebus 2 system. The kit can be expanded up to 4 door entry monitors. The kit is supplied pre-programmed and ready to use. The kit consists of: - 1 wall-mounted external unit for video entry systems, art. EX-B Bello series - 1 Mini Wi-Fi series door entry monitor art. 6741W, which, combined with the Comelit app, downloadable free of charge from the Google and Apple stores, and/or the Alexa/Ecoshow/Google Assistant voice assistants, allows you to answer calls directly from your smartphone/tablet/voice assistants, both locally and remotely - all accessories required to create the system