Smart 2.4 inch tft lcd door viewer kit 100 degree digital doorbell camera Door viewer.Jpg Features of doorbell camera : 1.Diy: doorbell camera is easy for you to install: just need 3-5 minutes. 2.2.4 inch lcd monitor and cat's eye unit. 3.100degrees of visual angle. 4. Users are not limited: even the old with poor eyesight or the little kids. 5. High-resolution image: 300, 000 pixel provide clear and vivid image, lcd screen superior to traditional door-bell. 6. Super province electricity: taking two aa batteries and special power management. 7. Compared with ordinary cat's eye, it is more practicality, safety. 8. Monitor with battery electric quantity display function. 9.15s automatic shutdown, users need not worry about battery runs out quickly if forgetting shutdown. 10.Fast boot:without waiting, a boot will be able to display images. Parameter of doorbell camera : 1.Can used for differently-thick door(35mm-50mm), mounting hole diameter:14mm 2. Camera: 300, 000 cmos illuminated sensor pixel. 3. Monitor: 2.4 inch tft lcd display resolution: 240xrgbx320 4.Power consumption.