... mobile phone easily get all set; 2: Gravity sensing system with hd wide Angle camera, no dead Angle of 360 degrees ... operation, more powerful, let you hand, easily build wireless alarm system;4: Alarm linkage function, the first time will alert the trigger ... visibilityHigh performance IR-LEDs, night vision range up to 8 metresAudioInput/OutputSupports two-way audio,Built-in Mic & SpeakerAudio ...