3.5"Wireless video intercom doorbell

12.   Temperature display

11.   Time display

10.   USB interface for downloading photos

9.      Built-in high-capacity rechargeable lithium-ion battery; calendar supported by a separate backup battery

8.      Indoor unit can automatically take and store more than 200 photos of visitors. You can also take photos manually at any time

7.      A choice of 16 multi-chord tunes are available with adjustable volume

6.      One indoor unit can control up to 4 outdoor units at the same time, or one outdoor unit can also call up to 4 indoor units

5.      Clear night vision makes monitoring, call, intercom, unlock and remote control available for 24 hours a day

4.      Outdoor unit uses CMOS 300K pixel camera with a field of view of 120 degrees

3.      Indoor unit uses 3.5 inch TFT true color display

2.      Micro-processing technology, automatic remote control functionality, excellent performance, high reliability , wall or desktop mounting

1.      2.4GHz frequency, wireless transmission range of about 150-180m without obstructions

3.5"TFT ,16 chord tone choices. Sound size can be adjusted