Function feature:
1)Transmission distance over 300meters (free lane)
2)World Public Frequency 2.4G data voice ,image transmission
3)Full-duplex hands-free call ,clear audio and video
4)Visiting key wake up call ,standly power-sawing sleep
5)Unclock door and alarm function
6)CE, ROHS,FCC available
7)83 effective communication channels,frequency-hopping technology,super eror- correcting capability ,so the conversation is very stable
8)Untrashort bulit-in antenna design ,fashionable outlook
9)super-infrared night vision video monitor capability
10)other optional function:auomatic inage shorge ,photo taken function
11)full-duplex,hands free call