• Shows on live who is behind the door
• Set includes batteries 4xAAA
• Viewing angle of the viewfinder is larger than 90 °, but does not cause image distortion found in traditional door viewfinders
• Screen 3.2 "provides a large, clear image of each guest standing behind the door (up to 10 times larger than in traditional viewfinders) - especially recommended for older persons
• The screen can be viewed from a distance of several meters at a different angle, which is ideal for children
• Metal construction resistant to various weather conditions (range -30 to 70º C.)