Spec Sheet Preview: The COLOR Camera with Sound Module(s) shall be Alpha Communications® / Golmar EL531, or approved equal. Module(s) shall be mounted inside the appropriate video door entry station. Module(s) shall include a built-in hi-resolution color camera with electronic iris, builtin light emitters (for night vision), adjustable gimbal for camera pan/tilt adjustment, and built-in mylar speaker with electret condenser microphone. Contractor shall observe all local and national electrical and building codes.