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The Camden Door Controls CM-850 is a surface-mount push button door release switch designed for use in access control and egress systems. It provides a manual momentary contact output that signals an electric strike, magnetic lock, or access control panel to release a secured door. The CM-850 mounts directly to a wall or door frame surface without requiring a back box, making it a practical choice for retrofit installations and new construction alike. Licensed electricians and low-voltage access control technicians are the typical installers of this device.
The CM-850 is suited for interior pedestrian door applications in both residential and light commercial settings. It is commonly installed at exit points where a push-to-exit function is required — allowing occupants to egress without a credential. Typical locations include office corridors, apartment building entries, medical facilities, and institutional doorways where controlled egress is part of the overall access control design.
Designed as an OEM-style surface-mount push button for use with access control systems that accept a momentary contact door release input, including electric strikes and electromagnetic lock controllers.
Installation is typically performed by a licensed electrician or certified low-voltage access control technician. De-energize the access control panel and any connected locking hardware before wiring the switch. Follow NEC Article 725 guidelines for Class 2 low-voltage control wiring where applicable. Confirm local building and fire codes for egress device placement requirements before mounting.
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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