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Datasheet of Door Station (DS-KB2421-IM)

Datasheet of Indoor Station (DS-KH2220)

Video Parameters

Display Parameters

Camera:

1/4" CMOS

Display Screen:

7-Inch Colorful TFT LCD

Resolution:

720 × 576

Display Resolution:

800 × 480

Video frame rate:

PAL: 25 fps

Operation Method:

Physical Button

Audio Parameters

Audio Parameters

Audio Input:

Built-in Omnidirectional Microphone

Audio Input:

Built-in Omnidirectional

 Microphone

Audio Output:

Built-in Loudspeaker

Audio Output:

Built-in Loudspeaker

Audio Quality:

Noise Suppression and

 Echo Cancellation

Audio Quality:

Noise Suppression and

 Echo Cancellation

Light Supplement

Device Interfaces

Light Supplement Mode:

Photosensitive IR Supplement, 

IR Range: 2 Meters

Four-wire Interface:

4 Four-Wire Interfaces 

(1-ch Video Input, 1-ch Audio 

Input/Output, 

1-ch Power

Device Interfaces

Supply, 1-ch Grounding in 1 Four-Wire Interface)

General

I/O Output:

1 Relay Output

Power Supply:

12 VDC

Four-wire Interface:

1 Four-Wire Interface (1-ch Video Input, 1-ch Audio Input/Output, 1-ch Power

Supply, 1-ch Grounding)

Power Consumption:

≤5 W

General

Working Temperature:

-10° C to + 55° C (14° F to 131° F)

Material:

Zinc Alloy

Working Humidity:

10% to 90%

Power Consumption:

Max. 5W

Dimensions(L × W × H):

195.8 mm × 132.8 mm × 18.39 mm

 (7.7" × 5.2" ×0.7")

Working Temperature:

-30°C to 70°C (-22°F to 158°F)

Working Humidity:

10% to 90%

Dimensions(L × W × H):

145 mm × 49.2 mm × 26.45 mm 

(5.7" × 1.9" × 1.0")