Name :wifi video door phone Brand :Saful Model No. :TS-IWP708 +dingdong doorbell (recommend) Discription:wifi video door phone with indoor wireless dingdong door bell, night vision, motion detection, open the door, auto recording Gross Weight :0.64kg Packing Size :27*20*8cm Instruction This product is widely used in single family. Such as villas, hotels, one family in high buildings,office and ect.Fix the doorbell on the wall or door with screws or double-side adhesive, Signal strength will be showed in the indoor unit. Freely using it in any place that has stable wifi signal. Wireless unlock control connection is simple; easy to use, and do video intercom; unlock the e-locks with a touch. http://www.doorbellalarm.com/