---
product_id: 5122419
title: "Safety Technology International, Inc. STI-1100 Stopper II with Horn, Flush Mount, Protective Polycarbonate Cover , Red"
brand: "sti"
price: "1191 kr"
currency: DKK
in_stock: true
reviews_count: 11
category: "Sti"
url: https://www.desertcart.dk/products/5122419-safety-technology-international-inc-sti-1100-stopper-ii-with-horn
store_origin: DK
region: Denmark
---

# 105 dB piercing piezo horn Battery included & easy maintenance Tamper-proof polycarbonate cover Safety Technology International, Inc. STI-1100 Stopper II with Horn, Flush Mount, Protective Polycarbonate Cover , Red

**Brand:** sti
**Price:** 1191 kr
**Availability:** ✅ In Stock

## Summary

> 🚨 Stop false alarms before they start—protect your space with confidence!

## Quick Answers

- **What is this?** Safety Technology International, Inc. STI-1100 Stopper II with Horn, Flush Mount, Protective Polycarbonate Cover , Red by sti
- **How much does it cost?** 1191 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/5122419-safety-technology-international-inc-sti-1100-stopper-ii-with-horn)

## Best For

- sti enthusiasts

## Why This Product

- Trusted sti brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Instant Alert Horn:** 105 dB horn sounds immediately when cover is lifted—no unauthorized access goes unnoticed
- • **Plug & Play Safety:** Includes battery and UL-listed for North American standards; hassle-free upkeep with biannual checks
- • **Durability Meets Design:** Flush mount with cable tether ensures secure, sleek installation in any professional space
- • **Built to Last, Guaranteed:** 3-year breakage warranty on cover, 1-year on electronics—reliability you can trust
- • **Unrivaled False Alarm Defense:** Patented polycarbonate cover stops false alarms without blocking real emergencies

## Overview

The STI-1100 Stopper II is a patented, flush-mount fire alarm cover featuring a tamper-proof polycarbonate shield and a 105 dB piezo horn that sounds when the cover is lifted. Designed to prevent false alarms in commercial and public buildings, it includes a battery, meets UL safety standards, and offers a 3-year warranty on the cover and 1 year on electronics. Ideal for schools, hospitals, and offices seeking reliable, maintenance-friendly fire alarm protection.

## Description

Product Description Safety Technology International, Inc. - STI 1100 Stopper II with horn, flush mount, protective polycarbonate cover. This unique and patented device has been helping stop false fire alarms around the world for almost 30 years without restricting legitimate alarms. This tamperproof, tough polycarbonate cover is ideal for schools, hospitals, nursing homes, stores, hotels and public buildings of almost every kind. 95 dB or 105 dB self-contained alarm. Cover is connected to the frame by a cable; when cover is lifted it hangs from the frame by this cable. Horn stops blaring once cover is snapped back onto the frame. 3 year guarantee against breakage of polycarbonate in normal use, 1 year on electronics. End user must verify the alarm and battery function every six months and replace battery annually or as required. UL Listed to U.S. and Canadian safety standards. Includes battery. Polycarbonate rated -40 degrees F to 120 degrees F (-40 degrees C to 49 degrees C). Safety Technology International, Inc. "We protect the things that protect you" From the Manufacturer This unique and patented device has been helping stop false fire alarms around the world for almost 30 years without restricting legitimate alarms. Ideal for schools, hospitals, nursing homes, stores, hotels and public buildings of almost every kind. 95 dB or 105 dB self-contained alarm. Complete with battery. Polycarbonate rated -40 degrees F to 120 degrees F (-40 degrees C to 49 degrees C). End user must verify the alarm and battery function every six months and replace battery annually or as required. UL Listed to U.S. and Canadian safety standards.

Review: Does the Job - Easy to install, great quality thick durable plastic as described, and the alarm if activated; will get your attention. It’s not a “one size fits all” fire alarm pull stations; we made some modifications and made it work in the space we had. This is a great cover to use in the prevention of false alarms happening, a great investment for commercial properties!
Review: Great - This was great for the job. Less than having a professional install it was

## Features

- Protective cover helps stop false fire alarms
- Super tough clear polycarbonate tamper proof cover and piezo horn
- Horn sounds when cover is lifted to gain access to alarm
- Cover is connected to the frame by a cable
- 3 year guarantee against breakage of polycarbonate in normal use, 1 year on electronics

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002RLQG8K |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Best Sellers Rank | #123,375 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #124 in Smoke Detectors & Fire Alarms |
| Brand | STI |
| Color | Red |
| Customer Reviews | 4.6 4.6 out of 5 stars (103) |
| Date First Available | June 23, 2009 |
| Global Trade Identification Number | 00662950110002 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1 pounds |
| Item model number | STI-1100 |
| Manufacturer | Safety Technology Intl |
| Mounting Type | Wall Mount |
| Number of Items | 1 |
| Part Number | STI-1100 |
| Power Source | Corded Electric |
| Product Dimensions | 30"D x 8"W x 6"H |
| Sound Level | 105 Decibels |
| Style | Alarms |
| UPC | 783961693411 662950110002 |
| Voltage | 12 Volts (DC) |
| Warranty Description | Lifetime guarantee against breakage of the polycarbonate housing in normal use (one year on electronic components). |

## Product Details

- **Brand:** STI
- **Color:** Red
- **Global Trade Identification Number:** 00662950110002
- **Item Weight:** 16 ounces
- **Manufacturer:** Safety Technology Intl
- **Number of Items:** 1
- **Power Source:** Corded Electric
- **Product Dimensions:** 30"D x 8"W x 6"H
- **Style:** Alarms
- **UPC:** 783961693411 662950110002

## Images

![Safety Technology International, Inc. STI-1100 Stopper II with Horn, Flush Mount, Protective Polycarbonate Cover , Red - Image 1](https://m.media-amazon.com/images/I/31S5FulEM+L.jpg)
![Safety Technology International, Inc. STI-1100 Stopper II with Horn, Flush Mount, Protective Polycarbonate Cover , Red - Image 2](https://m.media-amazon.com/images/I/41lmdhet4VL.jpg)
![Safety Technology International, Inc. STI-1100 Stopper II with Horn, Flush Mount, Protective Polycarbonate Cover , Red - Image 3](https://m.media-amazon.com/images/I/61Ar0V9OY0L.jpg)
![Safety Technology International, Inc. STI-1100 Stopper II with Horn, Flush Mount, Protective Polycarbonate Cover , Red - Image 4](https://m.media-amazon.com/images/I/61r4r08kOhL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does the Job
*by K***Y on June 24, 2025*

Easy to install, great quality thick durable plastic as described, and the alarm if activated; will get your attention. It’s not a “one size fits all” fire alarm pull stations; we made some modifications and made it work in the space we had. This is a great cover to use in the prevention of false alarms happening, a great investment for commercial properties!

### ⭐⭐⭐⭐⭐ Great
*by D***S on June 28, 2025*

This was great for the job. Less than having a professional install it was

### ⭐⭐⭐⭐⭐ Stop people from falsely pulling fire alarm
*by A***R on January 29, 2025*

Excellent way to stop people from falsely pulling the fire alarm. Working in Long Term Care, we had a situation where someone was pulling fire alarm multiple times daily. Easy to install, loud alarm startles

## Frequently Bought Together

- Safety Technology International, Inc. STI-1100 Stopper II with Horn, Flush Mount, Protective Polycarbonate Cover , Red
- Safety Technology International, Inc. STI-1130 Stopper II with Horn, Clear Spacer and Protective Polycarbonate Cover
- Safety Technology International, Inc. STI-13010FR Universal Stopper®, Flush Mount and Fire label, Indoor/Outdoor Protective Polycarbonate Cover for Pull Stations or Call Points, Red

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.dk/products/5122419-safety-technology-international-inc-sti-1100-stopper-ii-with-horn](https://www.desertcart.dk/products/5122419-safety-technology-international-inc-sti-1100-stopper-ii-with-horn)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-25*