Doorbird D21DKV, IP VIDEO DOOR STATION, RAL 7023, stainless steel, powder-coated, semi-gloss, Part# 423888319 adtran 1100216M2 the added expense of additional

the added expense of additional USB flash drives

Application: Fiberoptic (Cutting Kevlar Insulation)

Additional Smart Media Cards (not included) can add over 9 hours of content for continuous playback

Volume Adjustment For Speaker Phone Handset And Ringtones

Doorbird D21DKV, IP VIDEO DOOR STATION, RAL 7023, stainless steel, powder-coated, semi-gloss, Part# 423888319 adtran 1100216M2 the added expense of additionalThe efficient Doorbird D21DKV 423888319, IP VIDEO DOOR STATION, RAL 7023, stainless steel, powder coated, semi gloss is for multi tenant residences and buildings with up to 500 units. Features: Surface and flush mount possible, housings sold separately LAN connection (PoE capable) 2 way audio Ultra wide angle lens, 720p, night vision, 12 IR LEDs 4D motion sensor, RFID reader Keypad, display module 2 freely configurable bistable switching relays