... .2" TFT LCD screen 4,door safety viewer Wireless camera door peephole viewer PS601ASpecification 1. The operation is ... two pcs AA batteries( it can be used for long to 1800 times) and user's manual.Introduction 1 ... take photos . In fact, it is a digital camera. It solves the problem of the old with poor ... eyesight or the young,. Our product adopts camera instead of the common peephole, in fact, the ...