https://www.doorbird.com/downloads/datasheet_a1121_surface_en.pdf
Doorbird Intercom A1121 Surface-mount IP Access Control Device
$628.71
Multi-technology access control system and stand-alone solution for back and side doors, garages, storage and packing rooms, bicycle and machine rooms
Stainless steel V2A, brushed (GTIN/EAN: 4260423872028, P/n: 423872028)
Surface-mount housing included
WiFi / LAN connection (PoE capable)
Keypad
125 KHz and 13.56 MHz RFID reader
Tamper sensor
Wiegand interface
2 freely configurable bistable switching relays