Safety Technology International STI-1250NR

Weather Stopper Without Horn Flush Mount, No Label

  • Factory New
Brand: Safety Technology International Part #: 10527 Categories: , , Manufacturer Part #: STI-1250NR 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 7.00 × 5.00 × 3.20 in

Safety Technology International


Safety Technology International



Unit of Measurement

EA (Each)

Production Status



  • Cover is UV-stabilized.
  • Proven effective for more than two decades.
  • STI-1250NR is for flush mount pull stations (Surface – see STI-3150NR).
  • The Stopper II design is a registered trade mark of Safety Technology International, Inc.
  • UL Listed to U.S. and Canadian safety standards and NEMA 3R requirements (for standard and custom labeling).
  • Typical working properties of polycarbonate are -40º to 250ºF (-40º to 121ºC).
  • Fits virtually all manual pull stations (see Technical Data Sheet for dimensions).

STI Stopper II®

STI - Data Sheet