Doorking 1812-081 Classic Telephone Entry System - Surface Mount repair-part With its advanced MegaCode technology

With its advanced MegaCode technology and robust design

Additional hardware may be required for certain connection types

Compatibility: Supports LiftMaster and ELITE® automatic gate openers and garage door openers manufactured since 1993

12V 8Ah backup batteries

Doorking 1812-081 Classic Telephone Entry System - Surface Mount repair-part With its advanced MegaCode technologyResidential Telephone Entry System with Dual Access Control Relays The DoorKing 1812 081 Classic Telephone Entry System delivers a powerful, reliable access control solution ideal for residential applications. Featuring a direct connection to the homeowners existing telephone line, the 1812 Classic allows users to communicate with visitors and grant access by simply pressing a button. Designed with a rugged stainless steel faceplate and NEMA 4X rated