2.8 Inch Electronic Peephole Viewer Doorbell

2.8 inch Electronic Peephole Viewer Doorbell
Product component：2.8 inches of liquid crystal display+300000 pixel camera+3 pieces pipe
INDICATIONS：Family single door design
LCD HD visitor display,free
3 times digital zoom, image zoom
Outdoor viewing angle of 105-
Call function
Visitors ring, hand display image
Outdoor unit’s dimensions:∮ 54MM
Indoor Unit's Dimensions: 160mm x 140mm
Camera pixels: 300 000, 3x zoom lens
Display: 2.8-inch LCD screen
Camera vision:  viewing angle of 105 degrees
Operating temperature: -25 ℃ - +55 ℃
Operating Humidity: 10% - 95%
Working Power: 3 No. 7 AAA batteries, standby for 180 days
Installation specifications: door thickness: 35 MM - 105 MM
Scale of door hole: 14mm-52mm