OPEN-VOICE (loud-speaking) Home/Office Entry Intercoms
These Open-Voice Series intercom systems are primarily used in homes and small offices or professional offices, where a loud-speaking (open-voice) type of entry system is desired, but no internal communications is needed between the inside stations.
Basically, each door remote has a single (or no) call button, and can communicate with up to 20 (or more) inside stations.
These attractive stations are available in plastic or stainless steel, and feature talk, listen and door release buttons. The plastic stations also feature international graphic symbols and raised braille lettering.
A variety of stations is available for flush or surface mounting and to cover existing (larger) intercom back boxes.
Many of the apartment stations (i.e. IS543) are available in 3, 4 or 5-wire configurations.
For a standard 4-wire system: Apartment riser wiring shall be 3-common #22AWG and 1 selective wire #22AWG, for each station connected to the riser cable. Add 1-#22AWG common wire if 2nd tone signal will be used with optional apartment push-buttons, to signal apartments when visitor is at apartment door.
See system Installation Manual: AWD143 for more complete wiring information.