Safety Technology International STI-1150NR

Stopper II with Horn Flush Mount Indoor/Outdoor, No Label

  • Factory New
Brand: Safety Technology International Part #: 10517 Categories: , , Manufacturer Part #: STI-1150NR Tag:


This protective cover has been helping to stop false fire alarms around the world for more than 35 years, without restricting legitimate alarms. all models offer excellent protection against physical damage (both accidental and intentional) and several against severe environments both inside and out. It is ideal for schools, colleges, hospitals, nursing homes, stores, hotels and public buildings of almost every kind where there is a threat of false alarms.


Weight 1 lbs
Dimensions 6.20 × 5.00 × 3.20 in

Safety Technology International


Safety Technology International



Unit of Measurement

EA (Each)

Production Status



  • Cover is UV-stabilized.
  • Designed for outdoor use.
  • 95 or 105 dB self-contained alarm. Complete with battery.
  • STI-1150NR is for flush mount pull stations (surface – see STI-1155NR).
  • The Stopper II design is a registered trade mark of Safety Technology International, Inc.
  • UL Listed to U.S. and Canadian safety standards
  • Typical working properties of polycarbonate are -40º to 250ºF (-40º to 121ºC).

STI Stopper II®

STI – Data Sheet