---
product_id: 270823519
title: "STI Safety Technology International, Inc. -1100 Stopper II with Horn, Flush Mount, Protective Polycarbonate Cover, Red"
brand: "sti"
price: "₱16270"
currency: PHP
in_stock: true
reviews_count: 5
category: "Sti"
url: https://www.desertcart.ph/products/270823519-sti-safety-technology-international-inc-1100-stopper-ii-with-horn
store_origin: PH
region: Philippines
---

# 105 dB piezo horn alarm Secure cable tether connection Tamper-proof polycarbonate cover STI Safety Technology International, Inc. -1100 Stopper II with Horn, Flush Mount, Protective Polycarbonate Cover, Red

**Brand:** sti
**Price:** ₱16270
**Availability:** ✅ In Stock

## Summary

> 🛡️ Elevate your fire safety game—stop false alarms before they start!

## Quick Answers

- **What is this?** STI Safety Technology International, Inc. -1100 Stopper II with Horn, Flush Mount, Protective Polycarbonate Cover, Red by sti
- **How much does it cost?** ₱16270 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/270823519-sti-safety-technology-international-inc-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 piezo horn sounds immediately when cover is lifted, guaranteeing attention when access is needed.
- • **Crystal Clear Durability:** Super tough, tamper-proof polycarbonate shield rated for extreme temps (-40°F to 120°F) ensures long-lasting protection.
- • **Seamless Flush Mount Design:** Sleek, low-profile installation fits effortlessly in any professional environment from hospitals to hotels.
- • **Unmatched False Alarm Defense:** Stop costly disruptions with a patented cover that blocks false fire alarms without compromising safety.
- • **Trusted Reliability & Warranty:** Backed by a 3-year polycarbonate breakage guarantee and UL listing for peace of mind in critical safety.

## 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 spaces, it includes a secure cable tether, withstands extreme temperatures, and comes with a 3-year warranty on the cover and 1 year on electronics. UL listed and battery included, it’s a proven solution trusted worldwide for nearly 30 years.

## 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"

Review: 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: It matched the ad. It was simple to install! And the horn was great as we expected!

## 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 |
| Best Sellers Rank | #228,128 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #226 in Smoke Alarms |
| Country of origin | Taiwan |
| Department | Safety Hardware |
| Item model number | STI-1100 |
| Manufacturer | Safety Technology Intl |
| Product Dimensions | 12.7 x 8.1 x 16.5 cm; 453.59 g |

## Product Details

- **Brand:** STI
- **Colour:** Red
- **Power source:** Corded Electric
- **Product dimensions:** 76.2D x 20.3W x 15.2H centimeters
- **Style:** Alarms

## Images

![STI Safety Technology International, Inc. -1100 Stopper II with Horn, Flush Mount, Protective Polycarbonate Cover, Red - Image 1](https://m.media-amazon.com/images/I/61Ar0V9OY0L.jpg)
![STI Safety Technology International, Inc. -1100 Stopper II with Horn, Flush Mount, Protective Polycarbonate Cover, Red - Image 2](https://m.media-amazon.com/images/I/71WXEPlGu4L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***Y on 24 June 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!

### ⭐⭐⭐⭐⭐ Review
*by H***. on 21 August 2024*

It matched the ad. It was simple to install! And the horn was great as we expected!

### ⭐⭐⭐⭐⭐ Review
*by K***N on 20 January 2024*

No more prank alarm after installing this

## 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

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-02-06*