Spec Sheet Preview: The multi-entrance video adapter(s) shall be Alpha Communications® / S.T.R.™ model DPS-2 (aka European model# TUV2), or approved equal. Unit(s) shall provide the control and power circuits needed to switch the video functions, to the calling entrance station camera location. Unit(s) shall be used in addition to standard system amplifier. Low voltage wiring shall be used and positive screw terminals shall be provided for installation wiring. The DPS-2 unit(s) shall be installed adjacent to the video intercom amplif …