TT-25SH42CM  Product Features:   1. Mirror effect --- people can not see the lens direction---- better covert  monitoring.   2. 480TVL/420TVL Sony DSP inside--- good image   3. 3.6mm lens installed as standard configuration for wider angle surveillance.   4. Best for school, supermarket  and retail store. 　 　  Product Info: 　 Model No TT-25SH42CM Image Sensor Color 1/4" SHARP CCD Pixels PAL: 795(H) X 596(V)  PAL=500(H) x 582(V) NTSC:811 (H) X 508 (V)  NTSC=510(H)x492(V) TV system PAL/NTSC Sensitive area 4.8x3.6(mm) Sync. system Internal Resolution 420TVL AGC Auto BLC Auto AWB Auto Min illumination 0.5 Lux/F1.2 S/N Ratio >48dB (AGC off) Electronic shutter 1/50(1/60)-1/100,000 sec. Video output BNC 1.0Vp-p 75ohm Power supply 12V  DC Weight 360g Dimension 90mm(H)*130mm(W) Operating temp -10 to +50 centigrade degree Storage temp -20 to +60 centigrade degree	Mirror Dome Camera  Picture :

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