... 2,high-resolution image 3,2.2" TFT LCD screen LCD display door viewer TEC-PS601A Specifications:Patent design: ... user's manual.Introduction 1. Digital electric peephole, also called electric door-eye.2. The common peephole in ... it is composed o f digital camera, mainframe, display screen. 4.It collects images by camera and ... It is wireless, beautiful and convenient. LCD display door viewer TEC-PS601A