---
product_id: 1148495
title: "Safety Technology International, Inc. STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits or Entries Through Emergency Doors"
price: "S/.540"
currency: PEN
in_stock: true
url: https://www.desertcart.pe/products/1148495-safety-technology-international-inc-sti-6400-exit-stopper-multifunction-door
store_origin: PE
region: Peru
---

# Long-life 9V alkaline battery included 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

**Price:** S/.540
**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
- **How much does it cost?** S/.540 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/1148495-safety-technology-international-inc-sti-6400-exit-stopper-multifunction-door)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Flexible Alarm Modes:** Choose from 30 seconds, 3 minutes, continuous alarm, or discreet annunciator beeps for tailored security.
- • **Powerful 105 dB Alarm:** Ear-piercing sound grabs attention fast, ensuring immediate response to unauthorized door activity.
- • **Rugged & Reliable Build:** Virtually indestructible polycarbonate housing backed by a 3-year breakage guarantee keeps protection worry-free.
- • **Unmissable Deterrent Design:** Highly visible stop sign instantly signals 'No Entry' to prevent unauthorized access.
- • **Easy Installation & Operation:** Self-contained unit mounts on almost any door with included 9V battery and key override for authorized access.

## Overview

The STI-6400 Exit Stopper by Safety Technology International is a multifunction door alarm designed to prevent unauthorized exits or entries through emergency doors. Featuring a highly visible stop sign design, a powerful 105 dB alarm with multiple timing modes, 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 warranty on the housing, this door alarm ensures peace of mind for professional environments seeking robust access control.

## Description

Buy Safety Technology International, Inc. STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits or Entries Through Emergency Doors: Everything Else - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Number of Batteries | 1 9V batteries required. (included) |
| Voltage | 9 Volts |
| Control Method | App, Touch |
| Noise Level | 105 Decibels |
| Mounting Type | Door Mount |
| Sensor Technology | Contact Sensor |
| UPC | 737214686613 662950640011 662950640004 |
| Global Trade Identification Number | 00662950640004 |
| Size | 1 Pack |
| Manufacturer | Safety Technology Intl |
| Part Number | STI-6400 |
| Item Weight | 1 pounds |
| Product Dimensions | 6.8 x 2.7 x 0.4 inches |
| Item model number | STI-6400 |
| Batteries | 1 9V batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Style | Stopper |
| Material | Polycarbonate |
| Item Package Quantity | 1 |
| Included Components | 9V Battery, Door Alarm, Reed/Magnet |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Description Pile | Alkaline |
| Warranty Description | 3 year guarantee against breakage of polycarbonate in normal use (one year on electro mechanical and electronic components) |

## Product Details

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

## 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)

## 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 Peru*
*Store origin: PE*
*Last updated: 2026-01-23*