Four-family house kit Switch with Mini Handsfree Wi-Fi, SB2. This kit is fully pre-addressed in its delivery state and only needs to be installed and electrically connected. A maximum of 4 indoor stations, either audio or video, can be installed in master/slave mode per participant. The Mini HF WiFi is equipped with a WiFi module that allows the indoor station to connect to your own WiFi home network. The Comelit app must be downloaded from the Google Play Store or Apple App Store, and the smartphone must be connected to the indoor station via smart registration. This enables video door calls, including audio communication, to be accessible over WiFi and 3G networks. This kit includes: 1x Front panel Switch Art. IX0104, 1x UP housing Art. IX9150, 1x Speaker Video Art. 4681/4, 1x Power supply Art. 1210A, 1x Indoor station Video Mini HF WiFi Art. 6741W, 1x Terminal block Art. 1214/2C, and 1x Termination resistor Art. 1216.