The hands-free type 7" GB2 series color video-intercom monitor station(s) shall be Alpha Communications® / Golmar THERA GB2, or approved equal. Monitor(s) shall be mounted on the wall (or desk mounted using optional #SOB-UNI desk adapter). Monitor(s) shall be connected using a simple 2-conductor non-polarized (loop) wiring. Monitor(s) shall include a high quality 7.0" TFT (800 x 480) color touchscreen. Monitors using mirrors or other non-flat type screens, or coaxial cable shall not be acceptable. Monitor(s) shall feature electret condenser microphone for exceptional half-duplex digital voice fidelity. Monitor shall include an on-screen display (OSD) and additonal function buttons for call answering, door release and menu functions. Monitor shall feature an electronic calling signal (selectable) and shall only protrude from the finished wall 0.60" inches (16mm). Monitor shall have built-in visitor call log with 118 video image memory. Monitor shall feature 'missed call' notification.
Contractor shall observe all local and national electrical and building codes.