Built-In DVR Color Monitor

Specifications:  
1) CRT: 21 inches CRT
2) Video input / output: 4 channels BNC input, 1 channel BNC output
3) Panel control: menu (brightness, color, tint, contrast), channel selection, 
    digital video, recorder control, quad select, power on /off, etc.
4) Power source: ranged from 100 - 230V AC
5) Power consumption: Max: 75W 
6) Dimensions: 485 x 450 x 485mm (W x H x D)
7) Weight (N.W.): 28kg
8) Resolution: Max: NTSC 720 x 480, PAL 720 x 567
9) Horizontal stabilization:15.625KHz ± 500Hz
10) Vertical stabilization: 50Hz/60Hz ± 3Hz
11) Max video Fps: 25Fps (PAL), 30Fps (NTSC)
12) Video Quality: three choices (high. Normal. Low)
13) Operating temperature: modified MJPEG (compress rate: 5-20KB)
14) Operating temperature: 0oC - 40oC
15) Operating humidity: 10 - 90%