Doorking 1837-080 Telephone Entry System vkg-t21 Wiring: 2 non-polarized wires (door

Wiring: 2 non-polarized wires (door to master)

simultaneous two-way communication between visitors and tenants for smooth entry management

Battery Backup: 400 full cycles

and mounting hardware

Doorking 1837-080 Telephone Entry System vkg-t21 Wiring: 2 non-polarized wires (doorAdvanced Telephone Entry System for Secure Access Control The DoorKing 1837 080 Telephone Entry System is a versatile access control solution designed for gated communities, apartment complexes, office buildings, and industrial sites. This advanced entry system supports up to 3000 residents and features 8000 programmable codes for secure access. Equipped with a built in electronic directory and large, easy to use A Z CALL buttons, the 1837 080 ensures