STI Double Door Exit Stopper, 5.375"w/h x 2"d

Helps stop unauthorized exits/entries through
emergency exit doors. Here is a highly effective way to alert you to any unauthorized exits or entries through any emergency exit door. By doing so, it can serve as an inexpensive security device and help stop theft as well. If the protected door is opened, the electronic Exit Stopper emits an ear piercing alarm for 30 seconds, three minutes or continuously (as preset by the user).
A key operated override will silence the alarm and allow authorized exits. Exit Stopper is fitted with a long life alkaline battery. It is available in red or green for almost any type of door mounting or installation, including remote placement of the alarm.
General description: Exit stopper multifunction door alarm;
provides protection for double door applications with
two sets of reed contacts
Brand: Safety Technology International (STI)
Polycarbonate cover: Lifetime guarantee against breakage
in normal use
Electronic components: One year
Material: Red Polycarbonate
Overall size: 5.375"w x 5.375"h x 2"d x 1/8"th
Mount style: Flush mount
Power source: 9 VDC alkaline or 12-24 VDC wired
Warning horn volume at one (1) foot - switchable between:
- 95 dB (low) for office settings
- 105 dB (high) for plant environments
Standby current: 10 uA
Alarm current: 200 mA
Recommended operating temperature:
32 degrees F to 120 degrees F
Testing - it has been tested and approved or listed by:
- UL/cUL Listed No. S2466
- For fire alarm applications, UL38 requires outdoor listed
stations for outdoor use
- State of California (obtain local fire marshal approval)
- ADA Compliant (UL Certified No. S2466)
Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.