R-Pi based intercom Bi directionnal sound video return 8 adresses. IP or 3/4G based (with 3G or 4G hat) In this version use an audio hat and external speakers and mic for communication. Add a PI camera with or without infra-red vision to have a visiophone. Use Jitsi, Wazo or other services to communicate with you devices (phone app, computer app ...) and a pyton script to adress the corect person(s)/device(s) when a button is pressed and allow bidirectionnal audio and capture video flux from the interphone. Compatible with Pi2, Pi3B+, Pi4 and Pi zéro.