



🚨 Stop unauthorized exits before they happen — security that speaks volumes!
The STI 6400 Exit Stopper is a multifunction door alarm designed to prevent unauthorized entries and exits through emergency doors. Featuring a loud 105 dB alarm with customizable duration settings and a highly visible stop sign design, it offers robust deterrence and rapid alert. Built with virtually indestructible polycarbonate housing and powered by a long-life 9V alkaline battery (included), it ensures reliable, easy installation and comes with a 3-year warranty on the housing for lasting security.







| ASIN | B0006AZDII |
| ASIN | B0006AZDII |
| Batteries | 1 9V batteries required. (included) |
| Batteries | 1 9V batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #4,095 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Home Alarm Systems |
| Color | Red |
| Control method | Touch |
| Customer Reviews | 4.6 4.6 out of 5 stars (487) |
| Customer reviews | 4.6 4.6 out of 5 stars (487) |
| Date First Available | 11 August 2012 |
| Date First Available | 11 August 2012 |
| Department | Safety Hardware |
| Global Trade Identification Number | 00662950640004 |
| Included components | 9V Battery, Door Alarm, Reed/Magnet |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 454 g |
| Item model number | STI-6400 |
| Item model number | STI-6400 |
| Item weight | 1 Pounds |
| Manufacturer | Safety Technology Intl |
| 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 |
| Product Dimensions | 17.27 x 6.86 x 1.02 cm; 453.59 g |
| 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 |
| tech_spec_battery_description_toys | Alkaline |
S**H
Good Quality Product
Good Quality Product
J**T
Sold as advertised A+
J**R
I meant to take pics and forgot. First it's much SMALLER than I thought - you know it "looked bigger in the picture". However this little thing is much louder than the one we were replacing. Upside it uses a standard 9v battery so no weird battery combos. We used this on an metal emergency exit in a retail space that was about 120' from the cash registers. Now everyone can hear if someone tries to slip out that door into the parking lot. It has an internal reed/magnet setup that works like a lego block and can be moved around the inside of the unit to wherever the magnet contact is on the door. My only suggestion - the screws are pretty much for a wood door setup so save a headache and grad some self-tapping metal screws if using on a metal door and/or door jamb. Happy so far but it's only been installed a few days. I would only update this if it dies in the first year based on the price alone.
R**A
التوصيل كان سريع والشحنة مناسبة للعمل وذات جودة ممتازه
R**N
Exactly what I wanted. Can't buy a better door alarm for this price level. Was easy to install and works perfectly. Lots of adjustable options. Works well for restaurant emergency exit door.
J**R
Muy útil
Trustpilot
2 months ago
2 days ago