Wholesale Surveillance Equipment

A spy camera is a hidden camera,which is a still or videon camera used to film people without their knowledge.The camera is ''hidden" because it is either not visible to the subject being filmed,or is disguised as another object. Hidden camera have become popular,and can be build into common objects, such as colck, calculator, watch,tie,keychain,button and other things.
    A hidden camera can be wired or wireless.The former will be connected to a TV,VCR or DVR,whereas a wireless hidden camera can be used to transmit a video signal to a receiver within a small radius.