... -CE,FCC,ROHSpassed, -distance over 500m -Night vision function, digital wireless duplex video system produced by the professinal factory with ... monitor2 outdoor camera 2 indoor monitor 2.4 G Digital Wireless Video Door PhoneFunction Feature1) Transmission distance: 300m (free lane) ... key wake up call, standby power-saving sleep5).Unlock door and alarm function .6).CE, ROHS , FCC available .7).83 ...