Item Type: Video Doorbell System Material: ABS, Zinc Alloy, Full Glass Lens Uses: Suitable for all kinds of places, such as homes, apartments, office buildings, hotels and other places, for iron doors, wooden doors, anti theft doors, glass wooden doors, etc. Screen Size: 2.4in Shooting Angle: 160° Applicable Door Hole Range: Approx. 14-50mm/0.6-2.0in Applicable Door Thickness Range: Approx. 35-110mm/1.4-4.3in Infrared Night Vision: Support Photo Video: Support Motion Detection: Support Memory Card: Maximum support 32GB memory card (NOT included) Screen Battery Type: 3PCS AAA Battery (NOT included) 1、2.4in Screen: 2.4in high definition display, more intuitive observation of the state outside the door. In the monitoring interface, you can take photos or videos of the scene outside the door at any time. 2、HD Lens: Zinc alloy anti pry peephole viewer camera adopts high quality full glass lens and color enhancement technology to restore more details and clearly record the appearance of visitors. 3、160° Super Wide Angle: You can see everything outside the door, eliminate all dangers and better protect the safety. At home mode, away home mode, do not disturb mode, a variety of modes to choose from. 4、Selectable Ringtones: There are a variety of built in ringtones, you can choose according to your own preference, every time you press the doorbell, it will make a pleasant ringtone. 5、FIFO Function: The video door phone system will delete the oldest photos or videos in chronological order, that is, overwritten save without regularly cleaning up the memory. 1 x Screen 1 x Camera 1 x Mounting Plate 6 x Screw 1 x Manual