Safety Technology International STI-1155


Stopper II with Horn and Spacer, Clear

Availability: Estimated 6 Weeks

  • Factory New
Brand: Safety Technology International Part #: 10519 Categories: , , Manufacturer Part #: STI-1155Secondary Part #: 20-1099-R 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 1.2 lbs
Dimensions 6.20 × 5.00 × 5.20 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-1155 is for surface mount pull stations (flush mount – see STI-1150).
  • UL Listed to U.S. and Canadian safety standards (for standard and custom labeling).
  • Typical working properties of polycarbonate are -40° to 250°F (-40° to 121°C).
  • Fits virtually all manual pull stations (see Technical Data Sheet for dimensions).

STI Stopper II®

STI – Data Sheet