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Did you know?

The driveway monitor can turn on a lamp when a car enters your driveway, giving the appearance someone is home.

Lamp Controller


STI Products Work!
We’re very pleased with the performance of our Stopper II units. Our Alzheimer patients were pulling the fire alarms and that has ceased to be a problem.

Steve  Rykiel
NHC Healthcare of Orlando

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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


Wireless Driveway Monitor
with Talking Receiver STI-V34150

    • Sends wireless signal to voice receiver when
      a vehicle enters or leaves the driveway
    • Quick and easy to install
    • Operates up to 1000 feet (line of sight)
    • Receiver offers 10 tones/tunes and 53
      selectable words (in English or Spanish)
    • Weather resistant, battery powered
    • Will not be triggered by animals, people
      or shadows

    • Find out more

Wire Guard
Offers Excellent

Wire Guard Damage Stopper®

    • Wire guard protects sensitive equipment
      against vandalism
    • Constructed of tough, 9-gauge steel wire
    • Guard measures 12 x 12 x 12 inches
    • Quick and easy to install
    • Backed by a three year guarantee against
      breakage in normal use

    • more information

Select-Alert Alarm
Mini Controller

Helps Stop Unauthorized Use

    • Multipurpose strobe and alarm
    • Helps stop unauthorized use of devices
    • Flashing LED and alarm offers a variety of
      uses in emergency situations
    • Offers a choice of 32 distinct tones
    • Timing choices: 15, 30 or 60 seconds
      or continuous

    • Find out more

UL Listed
Wire Guards

Horn/Strobe/Speaker Damage Stopper®
STI-9705 & STI-9708

    • Guards protect against vandalism
      and accidental damage
    • UL/cUL Listed
    • Designed to protect System Sensor SpectrAlert®
      Advanced series of horn/strobe/speaker
      notification appliances
    • Constructed of tough 9-gauge steel wire
    • Available in flush or surface mount

    • Find out more