DoorKing 1877-010 Telephone Line Surge Suppressor gate-operator-part and controlled access points

and controlled access points

Wire Lead Antenna – Enhances signal reception for reliable long-range performance

Verify compatibility with your model before purchase

The LiftMaster POWERHINGE are designed for heavy-duty gates

delivering high holding force

DoorKing 1877-010 Telephone Line Surge Suppressor gate-operator-part and controlled access pointsTelephone Line Surge Suppressor for DoorKing Systems The DoorKing 1877 010 Telephone Line Surge Suppressor provides critical protection against voltage spikes and surges that can damage telephone entry and access control systems. Designed for use with DoorKing telephone based controllers, it safeguards communication lines by filtering and grounding transient surges caused by lightning or power fluctuations. Key Features Genuine DoorKing surge