Wireless 7 Inch 2.4GHz digital Touch Key Screen rainproof video Intercom Doorbell Access System with Lock for Home Night Vision 2.4GHz digital frequency Upgraded to version 7" touch key rainproof wireless video intercom doorbell Features: *2.4GHz Wireless Door Phone: 2.4GHz digital frequency hopping and encryption technology, transmission distance up to 300 meters in an open area and stable signal, robust anti-interference. *1 indoor monitor&1 outdoor camera: 7 inches digital TFT color screen, the indoor monitor can store up to 100 pictures with date and time, a super experience. *This is a video door phone with the functi