... display, intercom & chimes video door viewer with digital camera (2.5" color screem)Features:1. 4-in ... -1 security door viewer,built-in digital camera, color display, intercom & chimes2. User-friendly design, ... the optical door viewer in minutes4. High sensitive camera,the visitor’s picture can be taken even in ... 49 x 36.7 mm (2.4 in diagonal) Camera Color CMOS sensor, 0.3M pixel Built-in Memory ...