When you need something completely inconspicuous the Book Camera will do the Job! The Book Camera will blend right into any stack of books or fit on the book self and no one will be the wiser the high quality CCD camera built inside the book is virtually hidden. Some models have a 2.4 GHz 4 channel transmitter to create a wireless system for ease of placement and include a matching 8 channel scroll selectable receiver. Why 8 channels? This allows the user versatility in a wireless application. Each Book Camera has a choice of black/ white or color camera. If wireless is not the solution you are looking for we also have wired versions of the same high quality item. Specifications: • 92 degree field of view • 3.6mm Lens • 1/3 DSP Color CCD image Sensor, ¼ DSP B/W • 380 lines of resolutions (color), 420 lines B/W • 0.5 LUX Color, .05 B/W • DC 12V power • NTSC • Audio is not available • Transmitter / Receiver Specifications: • 4-channel operations (camera) • 8 channel scroll capable (receiver) • 300-700ft line of sight (LOS) approximate range • (LOS is dependent upon, obstructions and interference from other wireless devices) Includes: Hidden Video camera system Receiver (wireless models) Power supply RCA Cable Instructions SIZE: 9 1/2" x 6 3/8" x 2 1/4"