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DoorKing 1812 Residential Telephone Entry System Model 1812-081. Condition: Untested, as-is. Allows homeowners to use their telephone as an intercom to speak to a guest at a front door or gate without an additional telephone line. Can also be connected to a PBX or KSU type system for small businesses. Visitors are easily identified by voice communication and can be granted or denied access directly from a touch-tone telephone. Available in both surface and flush mount designs. Includes DKS auto-programming software for Windows.
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