Features: *4.5in LCD screen indoor doorbell with one outdoor PIR peephole camera, elegant and practical design. *1.0 megapixel lens, 1280*720 video recording. Support WIFI connection and smart phone APP remote control and setting. *110 wide viewing angle, almost can see the whole environment of the outdoor. *Support PIR motion sensor detection. When someone moves, it will auto photo taking/audio video recording and notificationpushing to APP. *Doorbell function, 16 kinds melodious ring tone reminds the host when guests visit. *Night Vision function, clear viewing even in the darkness. *With no disturb mode, you can open or close as you need. *Auto standby function, time can be set by yourself, more energy saving. *Maximum support 32GB SD card(not included). Can store 100 photos. *SD Card Storage Auto Cover function, when SD is full, and new picture/video will automatically cover the previous by time order, and no need to delete files regularly. *The Indoor Host supports two way power supply: rechargeable 3.7V 5000mAh battery or USB Cable(both included). *Convenient installation and easy change of batteries by opening the battery cover directly.