Doorking 2600-588 Heater Kit for 1812 Telephone Entry chain-#41 Quick Close: Supported through expansion

Quick Close: Supported through expansion board setting

Genuine LiftMaster® OEM board for secure compatibility

9210-390 – 460V Three-Phase (1

Reliable Durability: Constructed to meet original DoorKing specifications

Doorking 2600-588 Heater Kit for 1812 Telephone Entry chain-#41 Quick Close: Supported through expansionCold Weather Heater Kit for DoorKing 1812 Intercom Systems The DoorKing 2600 588 Heater Kit is a genuine OEM accessory designed to provide temperature regulation for the 1812 model telephone intercom system in cold weather environments. This kit includes a built in thermostat that automatically activates the heater when temperatures drop below 40F (4C), ensuring reliable operation in freezing conditions. Key Features Designed for DoorKing 1812