http://www.BrickHouseSecurity.com/dd9000.html - Tune into wireless camera frequencies and see exactly what the hidden security camera sees... no matter how hidden the wireless video surveillance camera is. Pick up on the common hidden spy camera frequencies of 900 MHz to 2.52 GHz and find a full range of cameras including PAL/ NTSC, CCIR/EIA. Watch the people that are watching with you! Sweep your home or office for wireless cameras and pick up their feeds instantly; perfect for counter surveillance.