Đặc tính kỹ thuật
| Model | DS-KIS203 | 
| Door Station (DS-KB2421-IM) | |
| Video Parameters | |
| Camera | 1/4 inch CMOS | 
| Resolution | 720 × 576 | 
| Video frame rate | PAL: 25 fps | 
| Audio parameters | |
| Audio input | Built-in Omnidirectional Microphone | 
| Audio output | Built-in Loudspeaker | 
| Audio quality | Noise Suppression | 
| Light Supplement | |
| Light supplement mode | Photosensitive IR Supplement, IR Range: 2 Meters | 
| Device interfaces | |
| Four-wire interface | 1 Four-Wire Interface (1-ch Video Input, 1-ch Audio Input/Output, 1-ch Power Supply, 1-ch Grounding) | 
| I/O output | 1 Relay Output | 
| General | |
| Material | Zinc Alloy | 
| Power consumption | Max. 5W | 
| Working temperature | -30° C to +70° C (-22° F to 158° F) | 
| Working humidity | 10% to 90% | 
| Dimension (L x W x H) | 145mm × 49.2 mm × 26.45 mm (5.7′ × 1.9′ × 1.0′) | 
| Indoor Station (DS-KH2220) | |
| Display parameters | |
| Display screen | 7-Inch Colorful TFT LCD | 
| Display resolution | 800 × 480 | 
| Operation method | Physical Button | 
| Audio parameters | |
| Audio input | Built-in Omnidirectional Microphone | 
| Audio output | Built-in Loudspeaker | 
| Audio quality | Noise Suppression and Echo Cancellation | 
| Device interfaces | |
| Four-wire interface | 4 Four-Wire Interfaces, 1-ch Video Input, 1-ch Audio Input/Output, 1-ch Power Supply, 1-ch Grounding | 
| General | |
| Power supply | 12 VDC | 
| Power consumption | ≤5 W | 
| Working temperature | -10° C to + 55° C | 
| Working humidity | 10% to 90% | 
| Dimension (L x W x H) | 195.8 × 132.8 × 18.39 mm | 


 
  
  
  
  
  
  
 