Alarm Controls Corporation KA-105 Key Switch

Product Description

The ALARM CONTROLS CORPORATION KA-105 is a key-operated switch designed for access control and door security applications. The switch operates in a key-remove-on configuration, meaning the circuit remains energized when the key is removed from the cylinder. This design is common in commercial and industrial door control systems where latched activation is required without continuous key presence. Licensed electricians and low-voltage access control technicians are the primary installers of this type of device.

The KA-105 is suited for commercial and light-industrial environments where key-controlled access points must maintain a switched state after the operator removes the key. Typical applications include door holder release circuits, alarm panel inputs, and electric lock control systems. It is sold as an individual unit and is appropriate for new installations or direct replacement of a failed key switch in an existing access control setup.

Key Features

• Key-remove-on switching action holds circuit state after key withdrawal
• Designed for access control, door holder, and alarm panel integration
• Single unit quantity suitable for individual point replacements
• Compact form factor appropriate for standard electrical or access control enclosures

Compatibility

Designed as an OEM-style replacement for key switch positions in commercial door control, alarm, and access control systems. No specific model compatibility data was provided in the product listing.

Installation Notes

Installation should be performed by a licensed electrician or certified low-voltage access control technician in accordance with applicable NEC requirements. De-energize the circuit and confirm power is off before wiring the switch into the control panel or door hardware circuit. Verify the key-remove-on logic is correct for the intended application before completing the installation, as reversing the switching logic can result in unintended door or alarm activation.