Doorking Surface Mount Telephone Entry System | DKS-1837-080 Callbox The cylinder is moved by

The cylinder is moved by an hydraulic unit located inside the cylinder

Weather-resistant

EMX-CS-101 Manual Instruction

Dimensions Flush Mount: 13

Doorking 1602-143 Warranty Policy

Doorking Surface Mount Telephone Entry System | DKS-1837-080 Callbox The cylinder is moved byDoorking Surface Mount Telephone Entry System DKS 1837 080 The 1837 80 Series stores up to 3000 phone numbers and 8000 device codes and can be expanded to control up to 48 wired access points with optional Tracker Expansion boards (up to 24 wirelessly). The 80 Series is available in Surface or Flush mount styles. 1837 is also available in the new 90 Series housing, click the button below to view the 90 Series product page. The Model 1837 is an ideal