1>Replace the door viewer,easy to install. 2>Commodity:Wireless Audio/Video Door Phone 3>High Pixel 300K,easy install ------ ... Outdoor Camera -------Indoor Monitor Wireless Audio/Video Door Phone Features:Model No.:HM-888(1 ... standards CE, CCC, FCC, R&NTTE(7) Ultrashort built-in antenna design, fashionable and attractive shape(8) Super-infrared night vision ...