Single-family kit for Simplebus 2 system. The kit can be expanded up to 4 video door entry monitors; it cannot be expanded with additional external door stations. The kit is supplied pre-programmed and ready to use. The kit includes: -n° 1 wall-mounted video door entry external unit, Bello series, art. EX-B -n° 1 Mini series hands-free Wi-Fi video monitor, art. 6741W, which, when paired with the Comelit app (available for free on Google and Apple stores) and/or Alexa/Echo Show/Google Assistant voice assistants, allows you to answer calls directly from smartphone/tablet/voice assistants, both locally and remotely -all accessories required for system installation