To operate the system, press the CALL button to call other stations. It rings as long as CALL button is pressed. When the conversation is complete, just put the handset in the cradle. Pressing the CALL button on the MASTER will ring ALL stations. You cannot call an individual Substation separately. This intercom is designed for indoor use only. It must also be used in wall-mount applications only. This intercom system is powered by the optional AC to DC power supply in Related Products and Accessories section, or via 4 AA batteries. Always put the handset back in the cradle to conserve battery life.
To reduce the possibility of outside noise, the recommended wiring is two conductor shielded. The wiring can be either loop (stations are in a series on the same wire) or home run (one wire directly to each station). Since this intercom can be battery powered, it works great as a communication system in applications such as recreational vehicle cab-to-camper, boat deck-to-cabin, limousine chauffer to back seat, and restaurant kitchen to bar as well as hundreds of other applications.
This intercom is available in white or black. Additional handsets are only available in white.