---
product_id: 1148495
title: "Safety Technology International, Inc. STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits or Entries Through Emergency Doors"
brand: "sti"
price: "AR$11299"
currency: ARS
in_stock: true
category: "Sti"
url: https://www.desertcart.com.ar/products/1148495-safety-technology-international-inc-sti-6400-exit-stopper-multifunction-door
store_origin: AR
region: Argentina
---

# Long-life 9V alkaline battery 105 dB piercing alarm Virtually indestructible polycarbonate Safety Technology International, Inc. STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits or Entries Through Emergency Doors

**Brand:** sti
**Price:** AR$11299
**Availability:** ✅ In Stock

## Summary

> 🚨 Stop unauthorized exits before they happen — security that speaks volumes!

## Quick Answers

- **What is this?** Safety Technology International, Inc. STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits or Entries Through Emergency Doors by sti
- **How much does it cost?** AR$11299 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/1148495-safety-technology-international-inc-sti-6400-exit-stopper-multifunction-door)

## 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

- • **Powerful 105 dB Alarm:** Ear-piercing sound ensures immediate attention to unauthorized door activity.
- • **Flexible Alarm Duration:** Choose from 10 beeps, 30 seconds, 3 minutes, or continuous alerts to fit your security needs.
- • **Robust & Reliable Build:** Virtually indestructible polycarbonate housing backed by a 3-year breakage guarantee.
- • **Unmissable Deterrent Design:** Highly visible stop sign instantly signals security and control.
- • **Easy Installation & Override:** Mounts on almost any door with key-operated silence for authorized access.

## Overview

The STI-6400 Exit Stopper is a multifunction door alarm designed to prevent unauthorized exits or entries through emergency doors. Featuring a loud 105 dB alarm with customizable alert durations, a highly visible stop sign design, and a virtually indestructible polycarbonate housing, it offers reliable, easy-to-install security. Powered by a long-life 9V alkaline battery and backed by a 3-year housing warranty, this device is the professional choice for safeguarding critical access points.

## Description

Product Description Safety Technology International, Inc. - STI 6400 Exit Stopper Multifunction Door Alarm. Helps prevent unauthorized exits or entries through emergency doors. If the protected door is opened, the electronic Exit Stopper (STI-6400) emits an ear piercing 105 dB warning horn, which will draw attention in a hurry. When activated, the alarm will continue for 30 seconds, three minutes or continuously (as preset by the user). 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. This highly visible “stop sign” design acts as a deterrent, completely self-contained and easy to install. May be mounted on top, right, left or next to almost any door. Exit Stopper is fitted with a long life 9-VDC alkaline battery. It is available in red or green for almost any type of door, mounting or installation. Has a 3 year guarantee against breakage of polycarbonate in normal use (one year on electro mechanical and electronic components). Safety Technology International, Inc. "We protect the things that protect you" From the Manufacturer Highly effective, alarm alerts you to any unauthorized exits or 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 emits an ear piercing alarm for 10 beeps, 30 seconds, three minutes or continuously (as preset by the user). A key operated override will silence the alarm and allow authorized exits. Exit Stopper is fitted with a long life alkaline battery.

## Features

- Highly visible "stop sign" design acts as a deterrent
- Virtually indestructible polycarbonate housing
- Detects both unauthorized exits and entries
- Less expensive than heavy horizontal bar type units
- 3 year guarantee against breakage of polycarbonate in normal use (one year on electro mechanical and electronic components).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0006AZDII |
| Batteries | 1 9V batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #7,913 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Industrial Warning Alarms |
| Control Method | App, Touch |
| Date First Available | October 26, 2005 |
| Description Pile | Alkaline |
| Global Trade Identification Number | 00662950640004 |
| Included Components | 9V Battery, Door Alarm, Reed/Magnet |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1 pounds |
| Item model number | STI-6400 |
| Manufacturer | Safety Technology Intl |
| Material | Polycarbonate |
| Mounting Type | Door Mount |
| Noise Level | 105 Decibels |
| Number of Batteries | 1 9V batteries required. (included) |
| Part Number | STI-6400 |
| Sensor Technology | Contact Sensor |
| Size | 1 Pack |
| Style | Stopper |
| UPC | 737214686613 662950640011 662950640004 |
| Voltage | 9 Volts |
| Warranty Description | 3 year guarantee against breakage of polycarbonate in normal use (one year on electro mechanical and electronic components) |

## Product Details

- **Battery Description:** Alkaline
- **Brand:** STI
- **Color:** Red
- **Power Source:** Battery Powered, dc
- **Product Dimensions:** 6.8"L x 2.7"W x 0.4"H

## Images

![Safety Technology International, Inc. STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits or Entries Through Emergency Doors - Image 1](https://m.media-amazon.com/images/I/71dEx4W3qvL.jpg)

## Available Options

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

## Questions & Answers

**Q: Sti release a newly redesigned exit stopper door alarm on april 2018.   is this the newer version?**
A: The newer version STI-6400 2018 to current will have a red table of 8 switches, older models have switches labelled JP

**Q: How is it installed?**
A: Simple, just mount the magnet on the door frame and the main unit onto the doo.  When properly mounted and key switch is turned on, the opening of the door will pull the unit away from the magnet that then releases the internal read switch causing the siren to alert. MOUNTINGH:  Close the door then mount the magnet on the inside door frame at the opposite side of the hinges (opening).  Depending on the conditions, locate the magnet either at the top or side of the door frame near the door's surface but do allow a slight distance from the actual door surface so that it doesn't stop the door from closing.  Once it is mounted you will mount the main unit onto the actual door putting the read switch side of the unit so it is very close and lined-up evenly with the top of the magnet's surface.  You will need to disassemble the unit so as to mount the unit to the door as well as to insert or change the battery.  There are two types of keys for this unit, the metal type key has a fork end on it that fits into the screw head that holds unit together.  The gold keys (two) are used to turn on or shut off the unit.    You will need to have this gold key available to turn-off the unit or to turn on the unit.

**Q: Alarm goes off even when key is off. What am I doing wrong?**
A: Thank you for reaching out to STI.  Unit should not sound after key has been turned to the horizontal "off" position.  If this is happening you may want to check the key switch wires are still in the key switch terminal.  For further discussion on this please contact me direct Tasha/STI Tech Support/ 800-888-4784 x213.  Best Regards.

**Q: Can I order extra keys? We use these in a dorm each summer for a camp and we have lost ours.**
A: I had to order a new one to get the key.

## Frequently Bought Together

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-02-17*