HIKVISION DS-KB2411-IM User Manual - Page 17
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Appendix
Installation Notice
While installing the indoor station, make sure that the distance between any two
devices is far enough to avoid the howling and echo. The distance between two devices
is recommended to be longer than 10 meters.
Here devices refer to indoor stations, and door stations.
Specification
Specification of DS-KH2220
Parameters
Display parameters
Display screen
Resolution
Operation method
Audio parameters
Audio input
Audio output
Audio quality
Device interfaces
Four-wire interface
General
Power supply
Power consumption
Working temperature
Working humidity
Dimension (L x W x H)
Video Door Phone·User Manual
Model
DS-KH2220
7-Inch Colorful TFT LCD
800 × 480
Physical Button
Build-in Omnidirectional Microphone
Build-in Loudspeaker
Noise Suppression and Echo Cancellation
4 Four-Wire Interfaces
1-ch Video Input, 1-ch Audio Input/Output, 1-ch Power
Supply, 1-ch Grounding
12 VDC
Max. 5W
-10° C to +55° C (14° F to 131° F)
10% to 90%
195.8 mm × 132.8 mm × 18.39 mm (7.7" × 5.2" ×0.7")
12