9.3pcs AA battery ,support to view outside for more than 1200times.
10."Don't disturb" function :In sleep model, long hold monitor button for about 10seconds, red led light at right bottom of screen will flash, successfully set don't disturb“ function . In "don't disturb' model, when anyone press call button ,no ring sound ,no view outside. Cancel' don't disturb' : long hold for about 10seconds until screen turn on with video
Unique design for Video door viewer
English manual instruction [AA Battery is excluded]