Guardtech 27X zoom are varifocal DSP Color CCD Cameras which is some up with Pelco-D. It is wired security box camera with a 1/4" sony Interline Transfer CCD image sensor, and integrated CCD Camera with 27X of Automatic Focusing Lenses. It is designed for use with professional CCTV systems and it can be configured with outdoor weather proof casing, different lenses, and mounting systems.

Key Features:
- Use Sony Super HAD CCD Sensor
- DSP Digital Signal Processing
- Automatic Back Light Compensatory Function
- To show the set function on the English menu.
- Online Photo Brightness, Chroma, Contrast,m AGC Gain Control Function.
- Privacy Sheltering Function Prinacy Protection in 4 Area.
- To set camera ID on the menu (0-255)

Specifications:
- Pickup device: 1/4 inch Sony CCD Image Sensor.
- Number of pixels: 537 (H) X 697 (V) or 795(H) X 596(V)
- System of Signal: NTSC or PAL
- Horizontal Resolution: 540 TV Line
- Minimum Illumination: 0.1 LUX (Day & Night Function)
- Lens: 3.9mm - 105.3mm
- Backlight Compensation: ON/ OFF
- Electronic Shutter: 1/50 ~ 1/100, 000 sec
- White Balance: Auto
- S/N Ratio: > 48db
- Gamma Correction: Automatic Focusing Electrically Operated Focusing
- Operation Temperature: -20celcius ~ 50celcius
- Control Connection: The line controls, Bus-Mastering
- Line method: DC+-5V ~ DC+-12V
- Bus method: RS485
- Bus Arbitration: PELCO-D1, PELCO-D2, PELCO-D3, PELCO-D4.
- Baud Rate: 2400/ 9600
- Video Output: < = 1Vp - p/75ohm
- Operation voltage: DC12V
- Operation Currency: < = 400mA
- Dimensions (mm): 62x63x127mm
- Weight: 285gram.