Defender PHOENIX1C Additional Wireless Indoor/Outdoor Night Vision Surveillance Camera for the PHOENIX1 Video Security System (Black) Expand your PHOENIX1 wireless video security system with this additional camera Completely Wire Free Surveillance - This camera is capable of running on a 9V battery (not included) allowing you to have ultimate portability Continuous Security  Day or Night! - The camera comes equipped with infrared night vision, which allows you to see when the area youre monitoring is dark. Durable Camera for Indoor or Outdoor Use - The discreet camera is built with durable aluminum and designed to function in both indoor and outdoor situations without deterioration or rusting Audio Support - A built-in microphone that lets you hear everything thats happening in your monitoring location allowing you to tell the difference between conversations and cries for help.