---
product_id: 52931924
title: "Exit Stopper, STI-6400, Safety Technology International, Emergency Exit Door Alarm, Self Contained Fire Door Alarm, Stop Misuse Unauthorised Access Theft,Red,6.8L x 2.7W centimetres"
brand: "sti"
price: "¥43294"
currency: JPY
in_stock: true
reviews_count: 9
category: "Sti"
url: https://www.desertcart.jp/products/52931924-exit-stopper-sti-6400-safety-technology-international-emergency-exit-door
store_origin: JP
region: Japan
---

# 105 dB piercing alarm 9V alkaline battery included UV-stabilized polycarbonate cover Exit Stopper, STI-6400, Safety Technology International, Emergency Exit Door Alarm, Self Contained Fire Door Alarm, Stop Misuse Unauthorised Access Theft,Red,6.8L x 2.7W centimetres

**Brand:** sti
**Price:** ¥43294
**Availability:** ✅ In Stock

## Summary

> 🚪 Stop intruders in their tracks with the Exit Stopper—security that speaks volumes!

## Quick Answers

- **What is this?** Exit Stopper, STI-6400, Safety Technology International, Emergency Exit Door Alarm, Self Contained Fire Door Alarm, Stop Misuse Unauthorised Access Theft,Red,6.8L x 2.7W centimetres by sti
- **How much does it cost?** ¥43294 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/52931924-exit-stopper-sti-6400-safety-technology-international-emergency-exit-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

- • **Global Ready:** Includes 21 language labels for seamless international use and compliance
- • **Key-Operated Override:** Authorized personnel silence alarm instantly with secure key access
- • **Effortless Installation:** Standalone system mounts on any door in minutes—no fuss, no delay
- • **Customizable Alarm Duration:** Choose from 30 seconds, 3 minutes, or continuous alarm to fit your security needs
- • **Instant Unauthorized Access Alert:** Ear-piercing 105 dB alarm triggers immediately on door breach

## Overview

The Exit Stopper STI-6400 is a robust, standalone emergency exit door alarm designed to prevent unauthorized access and theft. Featuring a loud 105 dB alarm, UV-stabilized polycarbonate housing, and flexible installation on virtually any door, it offers user-programmable alarm durations and a secure key override. Powered by an included 9V alkaline battery, this globally adaptable device ensures rapid, reliable security with minimal setup.

## Description

The Exit Stopper is a unique and highly effective way to alert you to any unauthorised exits or entries through emergency exit doors. It can also serve as an inexpensive security device and help prevent theft. It is available in red or green and can be mounted or installed on almost any type of door, including remote placement of the sounder. The highly visible ‘STOP’ sign discourages unauthorised use of emergency doors. If the protected door is opened, the electronic Exit Stopper emits an ear piercing alarm for 30 seconds, 3 minutes or continuously (as preset by the user). A key operated override facility will silence the alarm and allow authorised exits. When the door is closed, a number of reset options are available including an automatic function. A variety of alarm durations and setup features are available (see User Programmable Features chart overleaf). The Exit Stopper is fitted with a 9V PP3 alkaline battery.

Review: Sold as advertised A+ - Sold as advertised A+
Review: Door alarm - Easy to install and works well

## Features

- Prevent unauthorised exits and entries through emergency exit doors
- Stand alone alarm system can be installed and protecting doors in minutes
- Highly versatile; can be mounted or installed on any type of door, including remote placement of sounder
- Virtually indestructible polycarbonate cover is UV-stabilised
- Variety of user programmable features
- A key operated override facility will silence the alarm and allow authorised exits
- Choice of 21 language labels for use globally

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0006AZDII |
| Batteries | 1 9V batteries required. (included) |
| Batteries Required? | Yes |
| Batteries included? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | 29,113 in DIY & Tools ( See Top 100 in DIY & Tools ) 362 in Safety Signs |
| Control method | Touch |
| Customer Reviews | 4.6 4.6 out of 5 stars (489) |
| Date First Available | 25 Jan. 2011 |
| Global Trade Identification Number | 00662950640004 |
| Included Components | 9V Battery, Door Alarm, Reed/Magnet |
| Item Package Quantity | 1 |
| Item Weight | 454 g |
| Item model number | STI-6400 |
| Item weight | 454 g |
| Manufacturer | Safety Technology International, Ltd. |
| Material | Polycarbonate |
| Mounting type | Door Mount |
| Noise level | 105 Decibels |
| Number of batteries | 1 9V batteries required. (included) |
| Part Number | STI-6400 |
| Product Dimensions | 17.27 x 6.86 x 1.02 cm; 453.59 g |
| Sensor technology | Contact Sensor |
| Size | 1 Pack |
| Style | Stopper |
| UPC | 737214686613 662950640011 662950640004 |
| Voltage | 9 Volts |

## Product Details

- **Battery description:** Alkaline
- **Brand:** STI
- **Colour:** Red
- **Power source:** Battery Powered
- **Product dimensions:** 17.3L x 6.9W x 1H centimetres

## Images

![Exit Stopper, STI-6400, Safety Technology International, Emergency Exit Door Alarm, Self Contained Fire Door Alarm, Stop Misuse Unauthorised Access Theft,Red,6.8L x 2.7W centimetres - Image 1](https://m.media-amazon.com/images/I/71dEx4W3qvL.jpg)

## Questions & Answers

**Q: Can canit be used outside**
A: The STI 6400 Exit Stopper Door Alarm has not been tested for outside use and therefore does not have an IP rating. As a result we would advise against exposing it to outside elements as we can't guarantee the device will continue to work properly.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Sold as advertised A+
*by J***T on 18 March 2024*

Sold as advertised A+

### ⭐⭐⭐⭐⭐ Door alarm
*by T***S on 25 December 2021*

Easy to install and works well

### ⭐⭐⭐⭐⭐ Arrived on time
*by S***D on 19 October 2021*

Works well

## Frequently Bought Together

- Safety Technology International, Inc. STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits or Entries Through Emergency Doors
- SmartSign (Pack of 4) 5 x7 inch “Emergency Exit Only - Security Alarm Will Sound If Door is Opened” Sticker Labels, 5 mil Laminated Polyester with SuperStick Adhesive, Red and White, Made in USA
- 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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**Shop now:** [https://www.desertcart.jp/products/52931924-exit-stopper-sti-6400-safety-technology-international-emergency-exit-door](https://www.desertcart.jp/products/52931924-exit-stopper-sti-6400-safety-technology-international-emergency-exit-door)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-21*