Sdc MS-12D Monitor Strike Dpdt 2.75 in Electric Strike

Product Description

The SDC - SECURITY DOOR CONTROLS MS-12D is a monitor strike with double-pole double-throw (DPDT) switching, designed for electric strike applications in access control systems. Measuring 2.75 inches in length, the MS-12D provides both door-latching function and a built-in DPDT auxiliary switch that signals the status of the strike to a control panel or monitoring system. It is installed by licensed locksmiths, security integrators, and access control technicians in commercial and light-industrial door hardware projects.

The MS-12D is suited for commercial door frames where a standard electric strike is needed alongside real-time status monitoring. The DPDT contact output allows integration with access control panels, alarm systems, or building management systems to confirm whether the strike is in a locked or unlocked state. This makes it a practical choice for monitored entry points such as office suite doors, stairwell entries, and secured vestibules.

Key Features

• DPDT auxiliary switch provides strike status output for integration with access control or alarm panels
• 2.75-inch form factor fits standard commercial door frame strike pockets
• Dual-circuit switching supports both fail-secure and monitoring wiring configurations
• Compact design allows installation in narrow frame profiles common in commercial hollow-metal doors

Compatibility

Designed as an OEM-style electric strike replacement for commercial access control door hardware applications requiring a DPDT monitor output.

Installation Notes

Installation should be performed by a licensed locksmith or certified access control technician familiar with low-voltage wiring and door hardware. Disconnect all power to the access control system and strike circuit before beginning work. Follow applicable local codes and the door hardware manufacturer guidelines when routing and terminating low-voltage monitor wiring. Do not exceed the rated voltage and current limits of the DPDT contacts to avoid damage to the switch mechanism.