The JP-4HD is a video sub master station for use with the JP-4MED master station. 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. Main Features 7″ Touchscreen LCD Hands-free (VOX) or handset (duplex) communication Selective door release controls Room to room calling Monitor Door Station with the touch of a button Hearing Aid T-Mode Compatibility Digital Pan, Tilt, and Zoom Brightness Control Connects to JP-4MED or JP-8Z with a single Cat-5e cable Specs Power consumption: 200mA (max.) Video Monitor: 7" TFT color touchscreen LCD Type of communication: Handset: Simultaneous communication. Hands-free: Auto-voice actuation Mounting: Surface wall mount or desk mount using MCW-S/A (sold separately) Wire Type: Between Master/JP-8Z to Sub Master: Cat-5e or Cat-6 Wire Distance: JP-8Z to Sub Master: 165' Master to Sub Master with power supply: 650' Master to Sub Master without power supply: 98' Temperature Rating: 32-104°F (0-40°C) Dimensions: 5-11/16" H x 10-1/16" W x 1-7/8" D General Information Name: Aiphone JP-4HD 7" Video Sub Master Station with Touchscreen LCD, Aiphone Co., Ltd, Aiphone Category: Aiphone, Communications, Intercoms & Telephone Entry, Intercom Handsets, Intercom Master Stations, Presidents' Day Sale UPC Code: 4968249596264 Country of Origin: Thailand. Country of origin is subject to change.