Magicfly Wireless Video Door Phone Intercom Doorbell Home Security 1-camera 2-monitor Wireless version for easy and quick installation/2.4GHz frequency ensures stable signal transmission/Up to 30 meters transmitting distance for general households Auto & manual photo shooting ?Indoor unit can save at least 100 photos with built-in memory ?Rain & corrosion proof ?Aluminum alloy made 6 ring tones ?Adjustable volume & LCD brightness ?Back-stand of indoor unit for easy relocation ?AC power source or Lithium battery for both units ?Rechargeable Lithium batteries included ?Low power consumption Luxury 7'' Color TFT LCD with touch key panel/High definition visibility Hands-free intercom with built-in microphone and speaker/Electric-lock control/Infrared night vision with 6 IR LEDs