--- 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: "€ 188.41" currency: EUR in_stock: true reviews_count: 9 url: https://www.desertcart.pt/products/52931924-exit-stopper-sti-6400-safety-technology-international-emergency-exit-door store_origin: PT region: Portugal --- # 105 dB piercing alarm 9V battery powered, included Universal door mount, installs in minutes 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:** € 188.41 **Availability:** ✅ In Stock ## Summary > 🚪🔒 Stop unauthorized exits before they happen — security that speaks your language! ## 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?** € 188.41 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/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:** 21 language labels for seamless international use and compliance - • **Plug & Play Security:** Self-contained system installs on any door in minutes—no hassle, no delay - • **Key-Operated Override:** Authorized access made easy with secure key silence feature - • **Customizable Alarm Duration:** Choose 30 seconds, 3 minutes, or continuous alarm to fit your security needs - • **Instant Unauthorized Exit Alert:** Ear-piercing 105 dB alarm stops misuse in its tracks ## Overview The Exit Stopper STI-6400 is a robust, battery-powered emergency exit door alarm delivering a sharp 105 dB alert to prevent unauthorized access and theft. Featuring a durable UV-stabilized polycarbonate cover, quick installation on any door type, and user-programmable alarm durations, it combines high security with ease of use. Its key-operated override and multilingual labels make it ideal for global professional environments seeking reliable, visible, and customizable door security. ## 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. ## 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 | | Battery Description | Alkaline | | Best Sellers Rank | 44,954 in DIY & Tools (See Top 100 in DIY & Tools) 553 in Safety Signs | | Brand | STI | | Colour | Red | | Control Method | Touch | | Country Of Origin | China | | Customer Reviews | 4.6 4.6 out of 5 stars (506) 4.6 out of 5 stars | | Eu Spare Part Availability Duration | 3 Years | | Global Trade Identification Number | 00662950640004 | | Included Components | 9V Battery, Door Alarm, Reed/Magnet | | Item Dimensions L X W X H | 17.3L x 6.9W x 1H centimetres | | Item Type Name | Door Alarm | | Manufacturer | Safety Technology International, Ltd. | | Model Number | STI-6400 | | Mounting Type | Door Mount | | Number Of Batteries | 1 9V batteries required. (included) | | Number Of Items | 1 | | Number Of Packs | 1 | | Part Number | STI-6400 | | Power Source | Battery Powered | | Sensor Technology | Contact Sensor | | Size | 1 Pack | | Sound Level | 105 Decibels | | Unit Count | 1.0 count | | 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 on Reviewed in the United Kingdom 18 March 2024* Sold as advertised A+ ### ⭐⭐⭐⭐⭐ Door alarm *by on Reviewed in the United Kingdom 25 December 2021* Easy to install and works well ### ⭐⭐⭐⭐⭐ Arrived on time *by on Reviewed in the United Kingdom 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 --- ## 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.pt/products/52931924-exit-stopper-sti-6400-safety-technology-international-emergency-exit-door](https://www.desertcart.pt/products/52931924-exit-stopper-sti-6400-safety-technology-international-emergency-exit-door) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-05*