https://www.doorbird.com/downloads/datasheet_d2101kv_surface_en.pdf
Doorbird Intercom D2101KV/D2102FV Fingerprint 50/D2102FV EKEY Surface-mounting
$282.44
Stainless steel V4A (salt-water and grinding dust resistant), brushed (GTIN/EAN: 4260423862838, P/n: 423862838)
Fits only D2101KV/D2102FV Fingerprint 50/D2102FV EKEY IP Video Door Stations