Napco GEM-ACM1D-EX Access Control Accessory, 1-Door Export

Add reliable, integrated access control to your GEM-X255 security system with the Napco GEM-ACM1D-EX 1-door access control accessory. Designed for installers and security managers, this module releases a locking device (magnetic lock or electric strike) when a valid credential is presented, while tying door events into the GEM-X255 alarm and reporting framework for coordinated security and surveillance. The unit runs on 16.5VAC via a Class 2 50VA plug-in transformer and supports a door loop voltage of 10–13VDC with a loop current of 2.4mA, giving predictable power behavior for common locking hardware. Because it annunciate, reports alarms/troubles, and monitors the door without additional contacts, you get faster installations and fewer points of failure—ideal for commercial, industrial, or institutional access control deployments. Use the GEM-ACM1D-EX to centralize monitoring, improve incident response, and extend existing intrusion systems into full access control solutions. Contact your Napco dealer or order today to add this accessory to your GEM-X255 setup and strengthen your site security.

• Seamless integration with GEM-X255 panels to unify alarm and access control for streamlined security operations.
• Controls a single door release (maglock or electric strike) to simplify credential-based entry and reduce tailgating risks.
• Powered via 16.5VAC Class 2 50VA transformer for reliable operation and easy field installation.
• Monitors door status without extra contacts, reducing wiring complexity and installation time.
• Enables arm/disarm, alarm annunciation and reporting through the panel for centralized monitoring and incident response.