Lorex LW2002BAC1 Additional Black Indoor Accessory Color Camera for Lorex Ultra Digital Wireless Systems Ultra Digital Wireless Secure Range - up to 450ft. Line of Sight Wireless Transmission Range Audio Microphone built-in for one way audio and Night Vision for low light B&W viewing Wall or Tabletop mounting with supplied wall anchors and screws Optional 4"AA" Battery Operation in case of power failure Includes Power Supply