Alarm Controls Corporation KA-105A on Off Key Switch

Product Description

The ALARM CONTROLS CORPORATION KA-105A is an on/off key switch designed for access control and security applications. This switch operates in a key-remove-only configuration, meaning the key can only be removed when the switch is in a defined position, preventing unintended state changes. It is suited for controlling circuits in commercial and industrial installations where operator accountability and tamper resistance are priorities. Licensed electricians and security system integrators are the typical trades installing this device. The key-remove-only feature adds a layer of operational control that standard toggle or momentary switches do not provide.

The KA-105A is used in commercial buildings, industrial facilities, and secured access points where a keyed on/off control is required. It fits applications such as controlling door hardware circuits, panel overrides, or equipment enable/disable functions. The unit is sold individually and is intended for permanent installation in control panels, wall enclosures, or surface-mount boxes where a secure, operator-keyed switching point is needed.

Key Features

• Key-remove-only operation prevents key removal except in the designated switch position
• On/off switching function for straightforward circuit control
• Designed for access control, security, and industrial panel applications
• Sold as a single unit for individual installation points
• Compact key switch format suitable for panel and enclosure mounting

Compatibility

Designed as an OEM-style key switch for commercial access control panels, security system enclosures, and industrial control applications requiring a keyed on/off switching mechanism.

Installation Notes

Installation should be performed by a licensed electrician or qualified security system technician in accordance with NEC guidelines. De-energize the circuit and verify zero voltage before wiring the switch into the control panel or enclosure. Ensure the mounting cutout dimensions match the switch body before installation. Do not force the key or operate the switch under load conditions that exceed the device rating.