https://www.doorbird.com/downloads/datasheet/datasheet_a1101_black_en.pdf
Doorbird Intercom IP Video Indoor Station A1101 Black Edition
$607.50
For door communication in single-family residences and apartment buildings
Polycarbonate, black (GTIN/EAN: 4260423872677, P/n: 423872677)
WiFi / LAN connection (PoE capable)
4“ True Color Touch Display
2-way HD Audio, up to 102 dB
Room to room communication
SIP support
Home and building automation control
3 freely configurable bistable switching relays