The DoorBell Fon DP38-C is the 3rd Generation Main Controller for the DoorBell Fon interface, essentially the "brains" of the DoorBell Fon system. This product will allow users to communicate or monitor doors or gates, up to 4 locations, from any telephone in the home or business. Upgrade to allow the user to have door strike control with the
Outbound Relay Trigger, and operate external door chimes or other devices with the
Inbound Relay Trigger. Operation of this device is very easy. There is no programming involved; after connecting the appropriate wiring, just answer the telephone as if it were a normal call.
When a visitor pushes the button on a door station, the DoorBell Fon will make a distinctive ring which is different from that of your regular voice calls. Picking up the phone will automatically connect you to the door station which activated the system. If you're already on a phone call, you will hear a "call waiting" beep.