



🚨 Stop unauthorized exits before they happen — loud, smart, and ready to protect!
The STI-6402 Exit Stopper® is a high-decibel (up to 105 dB) multifunction door alarm designed for double doors, featuring versatile mounting options and multiple alarm modes. Powered by a long-life 9V alkaline battery, it offers easy installation with a complete accessory kit and durable UV-stabilized polycarbonate housing. Ideal for professional spaces seeking reliable, audible security against unauthorized entry or exit.
| Voltage | 9 Volts |
| Control Method | App, Touch |
| Noise Level | 105 Decibels |
| Mounting Type | Door Mount |
| Sensor Technology | Contact Sensor |
| UPC | 662950640202 |
| Global Trade Identification Number | 00662950640202 |
| Manufacturer | Safety Technology International, Inc |
| Part Number | 6402 |
| Item Weight | 12.8 ounces |
| Product Dimensions | 5.38 x 5.38 x 2 inches |
| Item model number | STI-6402 |
| Batteries | 1 9V batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Style | Alarm |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Included Components | Mounting Screws (12)^Tamper Wrench^9V battery^Reed Switch(2)^Magnet(2)^Tamperproof Screw^Key Ring^Activation Key (2)^Door Alarmed label^Anchors (12)^Spacers (8)^Door alarm unit^Installation instructions |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Description Pile | Alkaline |
D**Z
Works very Well!!
Its very usefull to install in emergency doors! Have a good control and has a easy instalation.
D**H
Simple to install
Took only 35 min to put on fire escape door! No more folks sneaking out!
V**6
Good inexpensive alarm
I put this alarm product on an outbuilding as a door alarm, using the alarm extension as a door trigger and mounting the box next to the door. The basic electronic design allows for a number of configurations and you can use it to trip outboard visual alarms with the onboard NO/NC relay contacts. Over and above using it for alarming a secured exit door it is versatile enough to create a multi sensor basic alarm system. If you had the motivation, you could use it for a two zone home alarm system. Works as an entry alarm as well as an exit alarm.
T**.
Met my needs and expectations
Met my needs and expectations
J**S
Works as described.
Easy to install, really loud!
J**Z
Sounds like a train
Easy to install and use in all doors and windows
A**R
As promised
As promised
A**R
Two Stars
Alarm was bought in February 2017. Alarm stopped working in June 2017. Did not even last 5 months.
Trustpilot
4 days ago
2 weeks ago