DSI ES411-KO Door Prop Alarm, No Key Switch

Stop unsecured doors from becoming security weak points. The Designed Security, Inc ES411-KO door prop alarm is a dedicated security alarm that warns staff and deters propped-door incidents with a loud 80 dB audible alarm and an adjustable 0–60 second trigger delay. Purpose-built for access control and facilities monitoring, this wired, standalone unit includes an alarm status relay for remote monitoring and seamless integration with access control systems, CCTV, or building management platforms.

Easy to install and tamper resistant, the ES411-KO runs on 24V DC and delivers reliable, on-site notification so teams can correct propped doors before an unauthorized entry or safety issue occurs. By reducing false alarms with its adjustable timing, it encourages consistent compliance with access procedures while cutting down on unnecessary staff interruptions. Ideal for commercial buildings, schools, healthcare facilities and retail environments, the ES411-KO supports your security and surveillance strategy with straightforward functionality and dependable performance. Add the ES411-KO to your next access control or monitoring deployment to strengthen perimeter security and operational adherence.

• Reinforces access control by instantly alerting staff when a door is propped open, reducing unauthorized entry and tailgating.
• Adjustable 0–60 second delay to minimize nuisance alerts while ensuring persistent propped-door conditions are caught.
• 80 dB local audible alarm provides clear, immediate notification to personnel and visitors for fast corrective action.
• Alarm status relay enables remote monitoring and easy integration with access control panels, building management or surveillance systems.
• Compact, tamper-resistant standalone design with 24V DC wired power for reliable, long-term operation and simple installation.