The white JP-4HD Hands-free Color Video Intercom Sub Master Station from Aiphone is used with the JP-4MED master station of JP Series Video Intercom. A maximum of 7 sub master stations can be used in the JP Series. The JP-4HD offers a 7” color touchscreen LCD and allows for handset (duplex) and hands-free (VOX) communication. This unit is equipped with a door release button for the user to allow visitor entry. The JP-4HD is also equipped with PTZ and brightness controls, giving the user control of the door station camera angle and camera lighting for better visibility. The JP-4HD connects to either the master station or JP-8Z distribution unit using CAT-5e / CAT-6 cable.   Features: Digital Pan Tilt and Zoom camera eliminates blind spots with 170° wide angle lens (video door stations)  Hands-free (VOX) or handset communication  Camera position and zoom can be set for call-in  Includes two N/O door release contacts (add RY-3DL for 3-4 doors)  Camera can be adjusted to compensate for bright illumination  Entry can be monitored via the master station  1 output to control a secondary device like a light, gate, or additional door  Video out to DVR via supplied connector  Homerun or daisy chain wiring options  Used in schools, offices, and homes  Specifications: Power Supply 24 VDC (from power supply) Current Consumption 200 mA Communication Simultaneous communication Hands-Free Options Auto-voice actuation Ambient Temperature 32 to 104°F (0 to 40°C) Screen 7″ (177.8 mm) color LCD screen Mounting Wall-mount Electrical 3-gang box Material Flame-resistant ABS resin Dimensions (W x H x D) 10.0 x 5.7 x 1.2″ (255 x 145 x 30 mm) Weight Approximately 1.72 lb (0.78 kg)