Shenzhen Security Group Co.,Ltd.
burglar alarm, wireless alarm, intruder alarm, home alarm, GSM alarm, Manufacturer and Supplier - China(CN)
Color 1/3 inch SHARP CCD, 420TVL,Standard Lens f=3.6mm, 0.5Lux. The Frame of reference is the person with 1.8M height and the distance is 2~8M. - Update: 2009-10-30