Alarm & Detection · Safety Technology International

Know the moment.

STI 1155 Stopper II with Horn and Spacer, Indoor/Outdoor Rated, Fire Label STI-1155

Price: $197.50Model: 1155
In stock — ready to ship Free US shipping on orders $500+ · $302.50 to go
Need a project quote?
Safety Technology InternationalShop all Safety Technology International →
STI 1155 Stopper II with Horn and Spacer, Indoor/Outdoor Rated, Fire Label STI-11551 / 4
  • Free US shipping
    on orders $500+
  • 30-day returns
    unused, in original box
  • Secure checkout
    Shopify Payments
  • Product help
    before & after you buy

About the 1155

Help reduce accidental or intentional false fire alarm activations with this clear, durable polycarbonate protective cover. Designed for indoor or outdoor use, it protects the alarm from physical damage and harsh environments while allowing legitimate activation. Lifting the cover triggers a local warning horn to draw attention to the area.

  • Self-contained warning horn with 95/105 dB output
  • Includes a 9V DC battery
  • Surface-mounted design with spacer
  • Red polycarbonate cover with fire label
  • UL/cUL listed and ADA compliant
  • Three-year guarantee; one year on electronics
  • Product Type: Security Cover
  • Color: Red
  • Material: PC
  • Power Source: Battery
  • Mount Type: Surface Mount
  • Power Description: Power SourceBattery

Specifications

BrandSafety Technology International
Model1155
Product typeSecurity Cover

Specs are taken from the manufacturer listing. Need a detail that isn't here? Ask us.

In the box

    Shipping & returns

    Shipping (US)

    • Free standard shipping on orders of $500 or more
    • Standard shipping $8.00 on orders under $500
    • Express shipping $15.00

    Returns

    • 30 days from delivery to request a return
    • Item must be unused, in its original packaging with all parts
    • Contact us first for a return authorization
    Full return policy →

    More in Alarm & Detection

    View all →
    System Sensor 4WTR-B i3 Series 4-Wire Photoelectric Smoke Detector with 135°F Heat Sensor and Form C Relay, White System Sensor System Sensor 4WTR-B i3 Series 4-Wire Photoelectric Smoke Detector with 135°F Heat Sensor and Form C Relay, White $209.00 System Sensor 4WITAR-B i3 4-Wire Photoelectric Smoke Detector with Isolated 135°F Heat Sensor, Sounder and Form C Relay, White System Sensor System Sensor 4WITAR-B i3 4-Wire Photoelectric Smoke Detector with Isolated 135°F Heat Sensor, Sounder and Form C Relay, White $221.00 System Sensor P2GRLED L-Series Compact 2-Wire Indoor Wall-Mount LED Horn Strobe, Red “FIRE” System Sensor System Sensor P2GRLED L-Series Compact 2-Wire Indoor Wall-Mount LED Horn Strobe, Red “FIRE” $159.00 System Sensor 5624 5600 Series 194°F Fixed-Temperature Dual-Circuit Mechanical Heat Detector System Sensor System Sensor 5624 5600 Series 194°F Fixed-Temperature Dual-Circuit Mechanical Heat Detector $85.00 System Sensor SBBWL L-Series 4×4 Wall Surface-Mount Back Box, White System Sensor System Sensor SBBWL L-Series 4×4 Wall Surface-Mount Back Box, White $67.00 System Sensor BZSPW-P L-Series Plain Bezel Kit for Wall-Mount Speakers and Speaker Strobes, White, 5-Pack System Sensor System Sensor BZSPW-P L-Series Plain Bezel Kit for Wall-Mount Speakers and Speaker Strobes, White, 5-Pack $159.00 System Sensor HGWL2-LF L-Series 520 Hz Compact Wall-Mount Fire Alarm Sounder, White System Sensor System Sensor HGWL2-LF L-Series 520 Hz Compact Wall-Mount Fire Alarm Sounder, White $158.00 System Sensor SS-HEAT-ROR SS-Series Addressable 135°F Fixed Temperature and Rate-of-Rise Heat Detector, White System Sensor System Sensor SS-HEAT-ROR SS-Series Addressable 135°F Fixed Temperature and Rate-of-Rise Heat Detector, White $198.00 System Sensor SWLED-P L-Series 2-Wire Indoor Wall-Mount LED Strobe, Plain White System Sensor System Sensor SWLED-P L-Series 2-Wire Indoor Wall-Mount LED Strobe, Plain White $99.00 System Sensor BZWC-AL L-Series “ALERT” Bezel Kit for Ceiling Strobes and Horn Strobes, White, 5-Pack System Sensor System Sensor BZWC-AL L-Series “ALERT” Bezel Kit for Ceiling Strobes and Horn Strobes, White, 5-Pack $159.00