Discontinued — No Longer Available New
This model has been discontinued by SDC. Shop current SDC products → or see the recommended alternatives below.
Sdc/Security Door Controls 446QE DPST Red Mushroom Switch Controller
Overview
The Sdc/Security Door Controls 446QE is a 446 series controller featuring dual-pole single-throw (DPST) red mushroom switch configuration. This 24VDC controller integrates OSDP communication for credential management and access control integration. Designed for proximity and keypad reader support with NFC/13.56MHz credential compatibility, the 446QE operates as a standalone or networked access control component in security integrations.
Compatibility
The 446QE supports OSDP (Open Supervised Device Protocol) for standardized communication with access control systems and readers. Compatible with NFC/13.56MHz proximity readers and keypad-based credential systems. Operates on 24VDC power supply. Suitable for door control applications requiring secure credential authentication and relay switching.