Camden CM-1105 Key Switch SPST Momentary N/C

Overview

The CM-1105 is a momentary-contact SPST key switch rated for 30VDC operation. It's a credential-based activation device designed for controlled access to electric strikes and electromagnetic locks on secured doors. The die-cast aluminum housing and mortise cylinder design make it rugged enough for high-frequency use in commercial and industrial environments where authorized personnel need a simple, physical method to trigger door control functions.

Compatibility

The CM-1105 integrates into standard 30VDC door control architectures. It accepts standard 1", 1 1/8", or 1 1/4" mortise cylinders (sold separately), allowing you to pair it with your existing key infrastructure. The switch is suitable for controlling overhead doors, electric locks, electromagnetic locks, electric strikes, and motors. It also works for auxiliary functions such as shunting, bypassing, timed relay circuits, and activating or deactivating CCTV and access control equipment in multi-zone facilities.

Installation Notes

The CM-1105 is a single-gang flush-mount assembly (2 3/4" width) fabricated from 1/4" thick die-cast aluminum in one-piece construction. A countersunk cylinder opening accepts the mortise lock. Installation includes two socket/slotted screws and two tamperproof screws with driver bit. The tamper- and vandal-resistant design is rated for all-weather environments, making it suitable for both interior and exterior door frames. Wire the switch contacts to your 30VDC control circuit or door controller input—confirm polarity and load rating before commission.