The IS-DV is an aluminum die cast, surface mount video door station and is both vandal and weather resistant. They connect to the IS-CCU or IS-SCU using CAT-5e/6 cable. The door stations have a built in dry contact, rated for 24V AC/DC 500mA, for door release. Each unit is equipped with a camera that provides pan, tilt, and zoom functionality from the master station, a speaker and microphone, and call button. A directory strip is provided for location identification. The camera units receive power from the controllers via the CAT-5e/6 cable.