The Doorking 1800-155 is a genuine OEM control board — Circuit Board SIM Adapter Micro to Nano.
Designed for the DoorKing 1800 telephone entry system, this factory-original component ensures correct fit and reliable performance. Installing genuine DoorKing parts protects your operator warranty and avoids the compatibility problems common with aftermarket substitutes.
In stock and ready to ship from GateHouse Supplies. Contact us for compatibility questions or bulk quantity pricing.
