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The ALARM CONTROLS CORPORATION MCK-4-4 is a stainless steel push plate equipped with a double-pole double-throw (DPDT) alternate action switch. It is designed for access control and door release applications in commercial and institutional facilities. The alternate action switch mechanism means each press toggles the circuit state, making it suitable for latching control functions rather than momentary activation. Licensed electricians and low-voltage access control technicians are the primary installers of this device.
The MCK-4-4 is used in commercial door access control systems, typically mounted at egress or entry points where a surface-mounted push plate is required. It fits standard exit device and push button wiring configurations and is appropriate for interior applications in offices, schools, healthcare facilities, and similar environments where reliable door control switching is needed.
Designed as an OEM-style replacement or new-installation push plate for commercial access control and exit device systems requiring a DPDT alternate action switching configuration.
Installation should be performed by a licensed electrician or certified low-voltage access control technician in accordance with applicable NEC requirements. De-energize all associated control circuits before wiring or replacing this device. Verify switch wiring polarity and circuit configuration against the control panel documentation before restoring power. Consult the manufacturer product manual for terminal layout and mounting dimensions prior to installation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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