---
product_id: 263625454
title: "STI Safety Technology International, Inc. -6402 105 dB Exit Stopper® Multifunction Door Alarm for Double Doors with on/off Switch and 9 Volt Battery"
brand: "sti"
price: "VT37172"
currency: VUV
in_stock: true
reviews_count: 5
category: "Sti"
url: https://www.desertcart.vu/products/263625454-sti-safety-technology-international-inc-6402-105-db-exit-stopper
store_origin: VU
region: Vanuatu
---

# 105 dB piercing alarm 9V long-life alkaline battery Easy multi-position mounting STI Safety Technology International, Inc. -6402 105 dB Exit Stopper® Multifunction Door Alarm for Double Doors with on/off Switch and 9 Volt Battery

**Brand:** sti
**Price:** VT37172
**Availability:** ✅ In Stock

## Summary

> 🚪🔒 Stop intruders in their tracks with the Exit Stopper®—security that speaks loud and clear!

## Quick Answers

- **What is this?** STI Safety Technology International, Inc. -6402 105 dB Exit Stopper® Multifunction Door Alarm for Double Doors with on/off Switch and 9 Volt Battery by sti
- **How much does it cost?** VT37172 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/263625454-sti-safety-technology-international-inc-6402-105-db-exit-stopper)

## 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

- • **Smart Alarm Modes:** Choose from 30 seconds, 3 minutes, continuous alarm, or discreet 10-beep annunciator mode.
- • **Authorized Access Control:** Key-operated override silences alarm for seamless authorized exits without hassle.
- • **Unmatched Audible Security:** 105 dB alarm cuts through noise to deter unauthorized access instantly.
- • **Durable & Weather-Resistant:** UV-stabilized polycarbonate housing built to withstand sun exposure and daily wear.
- • **Plug & Protect Installation:** Self-contained unit mounts effortlessly on any door orientation—top, side, or adjacent.

## Overview

The STI Safety Technology Exit Stopper® 6402 is a high-decibel (105 dB) multifunction door alarm designed for double doors, delivering instant alerts on unauthorized entry or exit. Powered by a long-lasting 9V alkaline battery and featuring versatile mounting options, it offers multiple alarm modes including continuous and annunciator beeps. Its rugged, UV-stabilized polycarbonate housing ensures durability, while a key-operated override provides authorized access control. Ideal for professional spaces seeking reliable, easy-to-install security with proven effectiveness.

## Description

Safety Technology International, Inc. STI-6402 Exit Stopper Multifunction Door Alarm for Double Doors - Highly effective, alarm alerts to any unauthorized exits/entries through emergency exit doors and rear doors. Serves as an inexpensive security device and helps stop theft as well. If the protected door is opened, the electronic exit stopper for double doors emits a 95/105 ear piercing alarm for 30 seconds, three minutes or continuously. A key operated override will silence the alarm and allow authorized exits. Another option is annunciator mode, in this mode it announces a doors opening with a set of 10 beeps and then resets. Should not be exposed to water. Exit Stopper is fitted with a long life 9-VDC alkaline battery. Highly visible "stop sign" design and complete with double reed switch assembly to monitor double doors. Mounts easily next to any door, 9-VDC alkaline battery, screws and anchors included. Housing is molded of super tough polycarbonate and is UV-stabilized for minimal damage from the sun. Recommended operating temperature 32°F to 113°F (0°C to 45°C). Note: End user must verify the alarm and battery function every six months and replace battery annually or as required. STI "We protect the things that protect you."

Review: Works very Well!!
Review: Device working as described..

## Features

- Alarm alerts to unauthorized exits or entries through protected doors
- Unit is completely self-contained and easy to install
- Sounds a powerful 95 or 105 db alarm when Activated
- May be mounted on top, right, left or next to almost any door
- Dimensions - 5 in. diameter x 1.875 in. depth

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0015Q7XQM |
| Audible Noise | 105 Decibels |
| Battery Description | Alkaline |
| Battery description | Alkaline |
| Best Sellers Rank | #41,170 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #53 in Smoke Alarms |
| Brand | STI |
| Built-In Media | Mounting Screws (12)^Tamper Wrench^9V battery^Reed Switch(2)^Magnet(2)^Tamperproof Screw^Key Ring^Activation Key (2)^Door Alarmed label^Anchors (12)^Spacers (8)^Door alarm unit^Installation instructions |
| Color | 2 |
| Colour | 2 |
| Control Method | Touch |
| Customer Reviews | 4.6 out of 5 stars 127 Reviews |
| Global Trade Identification Number | 00662950640202 |
| Item Weight | 0.8 Pounds |
| Manufacturer | Safety Technology International, Inc |
| Mounting Type | Door Mount |
| Number of Batteries | 1 9V batteries required. (included) |
| Number of batteries | 1 9V batteries required. (included) |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Sensor Technology | Contact Sensor |
| UPC | 662950640202 |
| Unit Count | 1 Count |
| Voltage | 9 Volts |

## Product Details

- **Battery description:** Alkaline
- **Brand:** STI
- **Colour:** 2
- **Number of batteries:** 1 9V batteries required. (included)
- **Power source:** Battery Powered

## Images

![STI Safety Technology International, Inc. -6402 105 dB Exit Stopper® Multifunction Door Alarm for Double Doors with on/off Switch and 9 Volt Battery - Image 1](https://m.media-amazon.com/images/I/61QQqshHzRL.jpg)
![STI Safety Technology International, Inc. -6402 105 dB Exit Stopper® Multifunction Door Alarm for Double Doors with on/off Switch and 9 Volt Battery - Image 2](https://m.media-amazon.com/images/I/81Tfn4C0fYL.jpg)
![STI Safety Technology International, Inc. -6402 105 dB Exit Stopper® Multifunction Door Alarm for Double Doors with on/off Switch and 9 Volt Battery - Image 3](https://m.media-amazon.com/images/I/81veCvJeXgL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Dose it come with the key?**
A: Our STI-6400 comes with 2 KIT-H19032 alarm keys (2341) and 2 KIT-H19016 service screw key

**Q: where is this made?**
A: Taiwan

**Q: How do you shut off the short loud signal every minute or two  that is obnoxious and assume is meant to indicate battery working?**
A: That could indicate you have a low battery.  Shut-off the unit and then replace the internal 9V battery.  Then you can turn the unit back on and the indicator should go away.  If you need instructions on how to do this let visit our website and you can access the installation sheet.  Or email us at sales@sti-usa.com.

**Q: If the door is opened in an emergency do the wires break away and if so can they be placed back?**
A: The STI-6402 goes into alarm after given it's NC simulation.  With the STI-6402 there will be (1) reed on board wired into the RS1 for the second door you will attach the additional reed in the hardware pack into the RS2.  Each door will need to have the extra magnet along side each reed (wired magnet) and when they separate it goes into alarm.   There is no disconnection of wires - visit this link to view it's install https://www.sti-usa.com/wp-content/uploads/6400Install.pdf.  For more information you can reach out to STI tech support, support@sti-usa.com.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works very Well!!
*by D***Z on 25 October 2023*



### ⭐⭐⭐⭐⭐ Device working as described..
*by K***M on 13 April 2023*



### ⭐⭐⭐⭐⭐ Simple to install
*by D***H on 24 August 2023*



## Frequently Bought Together

- Safety Technology International, Inc. STI-6402 105 dB Exit Stopper® Multifunction Door Alarm for Double Doors with on/off Switch and 9 Volt Battery
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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-22*