Alert & Alarm Devices

STI Exit Stopper® Series – Multifunction Door Alarm The STI Exit Stopper® Series is a highly effective and affordable security device designed to alert you to unauthorized exits or entries through emergency exit doors. When activated, the...

STI Mugger Stopper® Plus – Personal Alarm with Flashlight and Strobe The STI Mugger Stopper® Plus is a powerful personal safety device designed to deter attackers and summon help instantly. It features a 120 dB alarm and a flashing strobe...

STI Select-Alert Mini Alarms – Siren and Strobe Security Alerts for Cabinets and Doors The STI Select-Alert series is a versatile security solution for alerting to unauthorized access, tampering, or exits. Designed for indoor use, each unit...

STI Wireless Alert Kit Series – Transmitters, Sensors, and Receivers The STI Wireless Alert Kit Series offers a comprehensive wireless solution for monitoring doors, motion, fire extinguishers, and exit points—ideal for both residential and...

STI Wireless Chime Series – Doorbell, Entry Alert, Motion, and Extender Systems STI Wireless Chimes deliver reliable audio alerts for residential and commercial use without the need for complex wiring. The system includes a series of compatible...