STI SS2421LD-EN Stopper Station Push Button with Stopper Station Shield, "Lockdown" Label, Turn-to-Reset Button, Blue

Designed to give staff a clear, reliable method to initiate a lockdown, the Safety Technology International SS2421LD-EN Stopper Station Push Button delivers secure, predictable performance when every second counts. This emergency & lockdown button features a Turn-to-Reset actuator and a protective flush-mount cover to prevent accidental activation while enabling rapid, intentional use. The unit is UL/cUL listed and ADA compliant, making it suitable for code-driven installations in schools, hospitals, government buildings and corporate campuses.

Built for system flexibility, the Stopper Station accepts interchangeable gold-plated contact blocks (supports N.O. and N.C. configurations; rated 6A @ 600VAC or 1A @ 250VDC) so you can integrate it with fire alarms, access control, mass notification and monitoring platforms. Rugged PC and stainless-steel construction and a wide operating temperature range (-40°F to 249.8°F) ensure dependable operation in varied security and surveillance environments. The raised LOCKDOWN label and blue finish make the device easy to locate during an emergency.

Specify the STI SS2421LD-EN for reliable lockdown control in critical response plans — ideal for education, healthcare and commercial security applications. Contact your distributor to order or engineer into your next security system deployment.

• Instant, confident lockdown activation with a tamper-resistant Turn-to-Reset button that reduces false alarms and speeds response
• Protective flush-mount cover shields the actuator from accidental engagement and physical damage, improving reliability in high-traffic areas
• UL/cUL listed and ADA compliant for code-friendly installation across schools, healthcare, and corporate facilities
• Interchangeable N.O./N.C. gold-plated contact blocks (6A @ 600VAC, 1A @ 250VDC) for flexible integration with access control, alarm and monitoring systems
• Durable PC and stainless steel construction rated for -40°F to 249.8°F, suitable for indoor/outdoor security and surveillance environments
• Blue, clearly marked LOCKDOWN label and lift/push messaging for quick identification during emergency procedures