SDC TJ352 Double Door Top Jamb Controller

Overview

The SDC TJ352 is a double door top jamb mounting controller designed for distributed access systems managing dual-door entry points. This unit handles proximity and keypad-based credential verification, eliminating the need for separate controller boxes mounted beside frames — a real benefit in high-traffic corridors where visual clutter matters or where door frames lack wall space for traditional mounting. Mount it above the doorway and wire readers on each door into a single control point.

Compatibility

The TJ352 integrates with proximity readers and keypad input devices operating on the Open Supervised Device Protocol (OSDP) standard. It supports NFC and 13.56MHz contactless credentials, so it works with existing card or mobile credential infrastructure already deployed in your facility. Any OSDP-compliant reader or keypad designed for 13.56MHz operation will pair with this controller — check your reader documentation for OSDP certification.

Installation Notes

Top jamb mounting positions the controller above both door frames, minimizing visual impact while keeping reader cabling runs short and organized. Discrete placement reduces tampering risk and maintains sight lines in lobbies or secure entry zones. Wire proximity readers and keypads into the TJ352's input terminals; the controller communicates upstream via OSDP to your central access management system. No external power specifications are documented in available evidence — confirm voltage and power draw with the manufacturer or your integrator before final design.