DKS DoorKing 1812-004 Switch Push Button NO Lghted

DKS Doorking 1812-004 Switch Push Button N.O. Lighted, when a guest presses the Push to Call button, the homeowner will hear a short tone in their handset to indicate that a guest is at their door or gate. The homeowner can also use the same process when talking to a guest at the 1812 system.