Wherever you are, the IPGUARD® app provides you with audio-visual calls from visitors using the visitor panel installed on your building. You can : - receive audio-visual calls via the 4G/3G network and WIFI - open the door from your phone, tablet - see a log of all calls received or missed including a picture of the visitor. This app is only for the 4G products (Noralsy) / IPGUARD® visitor panel range.