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You can search for a cover based on the dimensions of the appliance you need protected!

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STI Products Work!
We’ve suggested the use of STI Stopper II units for problems with false fire alarms in schools as well as well as apartments where pull stations are located in areas with limited visibility.

Darren Drake
Fire Marshal
Napa Fire Department

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  Fire Products Theft Vandalism polycarb covers wire guards buttons switches homework products  
  Fire Products Alarms & Chimes Polycarbonate Covers Wire Guards Buttons and Switches Home & Work Products  

About STI

False fire alarms and the theft and vandalism of protection devices can be a serious issue, compromising safety as well as costing money.

STI has been producing safety technologies that stop false fire alarms and prevent theft and vandalism for thirty years. We now market more than 1000 products worldwide. Our range includes fire alarms protection devices, stopper covers and enclosures, wire guard protectors and security protection products.

Contact us now to discuss how we can solve your specific problems.

STI Stopper II

Low Profile
Cover with
Conduit Spacer

Universal Stopper®

    • Indoor/outdoor cover has a flat profile
      and conduit spacer
    • Protects a wide range of devices
    • Constructed of tough polycarbonate
    • High strength continuous hinge
    • Low Profile - ADA Compliant

    • Find out more

Metal Cans:
Pick Your Size

Metal Protective Cabinets

    • Protects electrical and electronic
      equipment from hazardous parts
    • Heavy-duty cabinets constructed with
      a powder coated metal to help
      protect against corrosion
    • Continuous piano type hinge
    • Key or thumb lock
    • Seven 1/2, 3/4 inch conduit knockouts
    • Metal meets or exceeds Type 1 requirements
    • UL/cUL Listed

    • More Info

Button and
Wireless Shield
with Sound and Transmitter

    • Sounds alert and sends wireless
      signal to receiver when activated
    • Momentary button has “EMERGENCY” label
    • When supervised shield is lifted, a 65 or 85 dB
      alert sounds and signal sent to receiver
    • Works up to 1000 feet (line of sight)
    • Requires 4 or 8-Channel Receiver

    • learn more

Keep Energy
Costs Down

Thermostat Protector

    • Cover helps protect thermostat and
      energy sensors against tampering
    • Cover mounts directly over thermostats
      to prevent unwanted access
    • Useful where thermostats are located in
      waiting rooms, break rooms, cafeterias or
      any other public area
    • Holes in the frame allow air to circulate freely
      for proper operation of protected thermostats
    • An inner wall prevents tampering with dials and levers

    • Find out more