Doorking Telephone Entry System 90 Series | DKS-1835-090 2000 lbs The F310 can contain up

The F310 can contain up to 25 different PINs (Personal Identification Numbers)

Fully automatic

Includes everything you need to retrofit existing Vanguard 3501 installed units to a great new

Linear Door Enclosure 8x12 Blank

bracket and 6 counterweights

Doorking Telephone Entry System 90 Series | DKS-1835-090 2000 lbs The F310 can contain upDoorking Telephone Entry System 90 Series DKS 1835 090 The Model 1835 is an ideal telephone entry system suited for apartment and gated community applications as well as office buildings and industrial sites. Each 1830 Series unit allows Voice and Data connection over Cellular, Internet, or a POTS (Plain Old Telephone Service) connection. The single line LCD display features big 1 2 inch characters for easy viewing and your personalized message