The system combines a CCD pinhole camera with wireless transmitter. . The camera and the transmitter works on 12 V DC. All you need to do is plug in the power adapter or optional battery holder for portable use. It's a perfect "hide it your self" wireless camera.
Included receiver connects to any TV, VCR or a DVR.

Note: Wireless cameras with 2.4GHz & 5.8 GHz frequency can be interfered by other wireless devices such as a wireless router or cordless phones. And by FCC rules, other bands are not allowed for the consumers. Please order it at your own risk. Also consider "all in one" system at: http://www.spycameras.com/AllinOne.htm