It offers 3 alarm sound modes and a blue LED indicator for immediate visual signaling

it is ideal for professional security systems in outdoor environments

it ensures excellent performance in low light conditions thanks to DarkFighter (Starlight) technology and H

Maximum operating distance: 61 m

Dahua Technology VTH2421FB-P sistema per video-citofono 17,8 cm (7") Nero It offers 3 alarm soundDahua Technology VTH2421FB P. Display diagonal: 17. 8 cm (7"), Display technology: LCD, Display resolution: 1024 x 600 pixels. Product colour: Black, Placement supported: Horizontal. Ethernet interface type: Fast Ethernet, Ethernet LAN data rates: 10,100 Mbit s, Supported network protocols: TCP IP. Indoor unit power supply type: DC, Power consumption: 7 W, Power consumption (standby): 1 W. Width: 221. 5 mm, Depth: 21. 5 mm, Height: 119. 6 mm