# Safety Technology International STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits or Entries Through Emergency Doors (10 Pack) — resale value

Source: JunkPal price guide — https://junkpal.ai/products/safety-technology-international-sti-6400-exit-stopper-multifunction-do-b00v3vyjru

**Safety Technology International STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits or Entries Through Emergency Doors (10 Pack)** sells for about **$829.95** new or sealed, based on real closed eBay sales.

Live listings and the full sold-price history are on the page: https://junkpal.ai/products/safety-technology-international-sti-6400-exit-stopper-multifunction-do-b00v3vyjru

## Value

| Condition | Value (USD) |
| --- | --- |
| New / Sealed | $829.95 |

Values are medians of real closed eBay sales, updated 2026-07-22. They are estimates for reference, not offers or appraisals — condition, completeness and edition move them a lot, so compare against the sold listings before pricing anything.

## Check the market

- [Sold listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DSafety%2520Technology%2520International%2520STI-6400%2520Exit%2520Stopper%2520Door%2520Alarm%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-sold&p=md-sold) — the closed sales these medians are computed from
- [Live listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DSafety%2520Technology%2520International%2520STI-6400%2520Exit%2520Stopper%2520Door%2520Alarm%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-live&p=md-live) — what sellers are asking right now

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## Details

| Field | Value |
| --- | --- |
| Brand | STI |
| Category | Camera & Photo |

## About

This product is the Safety Technology International STI-6400 Exit Stopper Multifunction Door Alarm, sold as a 10-pack. It is designed to help prevent unauthorized exits or entries through emergency doors.

This guide is for buyers and sellers interested in tracking the market value of this specific door alarm system.

The resale value of the STI-6400 is influenced by the condition of the units, whether the entire 10-pack is complete, and any specific edition details.

## FAQ

**What is the STI-6400?**

It is a Safety Technology International door alarm designed to help prevent unauthorized exits or entries through emergency doors.

**What affects the resale value of this alarm?**

The condition of the units, the completeness of the 10-pack, and any specific edition details drive its resale value.

**Is this item in the Camera & Photo category?**

Yes, according to the provided specifications, this product is listed under the Camera & Photo category.

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Full price guide: https://junkpal.ai/products/safety-technology-international-sti-6400-exit-stopper-multifunction-do-b00v3vyjru
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-07-22, based on real sold listings (junkpal.ai)"