The C-200 allows a single line phone or phone system to share a phone line with an entry phone. Tenants may answer an entry phone call and converse with the visitor.
The C-200 provides a ???Call Waiting??? tone when the phone line is in use.
Tenants may call out to the entry phone for monitoring purposes. Auxiliary contacts are provided to operate a doorbell, or activate a camera, lights, etc.
If additional features (such as doorstrike, multiple entry phone with caller ID, and keyless entry) are needed, use the Viking model C-2000A.