DoorKing 2351-085 Tracker Expansion Board 900 MHz Wireless Module and Single Unit Enclosure

Expand and modernize your access control system with the DoorKing Systems Tracker Expansion Board 2351-085. Designed for installers and facilities managers, this control panel board lets you increase monitored entry points — up to 48 with wired connections or 24 using the included 900 MHz wireless module — without replacing your existing controller. The kit arrives complete with a 16V, 20VA power transformer and a rugged, weather-resistant single-unit enclosure to simplify field installation and protect electronics in outdoor security and surveillance environments. Compatible with DoorKing 1833, 1835, 1837 and 1838 series access controllers, the Tracker board also feeds gate operator data into your access control system for unified monitoring and reporting. That means fewer cables, faster deployments, and more reliable perimeter control for parking facilities, gated communities, and commercial properties. Upgrade your security infrastructure with a scalable, industry-grade expansion solution — contact sales to specify the 2351-085 for your next access control or monitoring project.

• Expand access quickly: add up to 48 wired or 24 wireless entry points to existing DoorKing controllers for scalable site growth
• Built-in 900 MHz wireless module: reduces cabling costs and simplifies deployment for remote gates and perimeter doors
• Reliable power included: ships with a 16V, 20VA transformer for streamlined installation and dependable operation
• Weather-resistant single-unit enclosure: protects electronics for outdoor security, surveillance, and monitoring applications
• Broad compatibility: works with DoorKing 1833, 1835, 1837 and 1838 series controllers and integrates with gate operators for centralized access control