Portable DVRs with built-in high resolution digital cameras are being used by one of the leading department stores in South America, the Mexican chain Liverpool.
Product manufacturers Rainbow report that motion detection with adjustable detect sensitivity rate, makes it suited to this client’s varied usage which includes deployment at shops and distribution centres. The unit offers a video capture facility and records images on a built-in 128 MB Flash memory which can be optimised through use of a motion detection mode.
About the recorders
The DVRs support both NTSC and PAL and resume recording automatically after power loss. An intuitive interface allows users to select image compression qualities and frame rates, according to the requirements of the location.
About the retailer
Liverpool operates 50 stores and multiple shopping malls throughout Mexico and expansion is taking place in Costa Rica and Guatemala. The company has warehouses in Mexico City and Guadalajara while the flagship retail outlets include Mexico City, Monterrey and Villa Hermosa. One of the oldest retail names worldwide, Liverpool was established in 1847.
Power supply
Power supply for these DVRs is DC 12V +/-%10 or 170mA. The units can also be operated by four AA batteries meaning that they can be deployed discreetly to combat internal stock losses. According to Rainbow, it is significant that several retail companies with historical reluctance to employ CCTV have opted for these unobtrusive CMOS sensor-based units which place portability and ease of operation above image resolution.
Other use
Other usage, the makers add, can cover general workplace surveillance with regard to safety practice and injury claims or covert observation of children, pets and livestock. There are imminent applications of the equipment in taxi cabs with the motion activation mode being effective since it can coincide with the passenger entering the vehicle, the makers say.
