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.

Safety Technology International, Inc. STI-6400 Exit Stopper Multi-Function Door Alarm - Prevents unauthorized entry and exit from emergency doors

Safety Technology International, Inc. STI-6400 Exit Stopper Multi-Function Door Alarm - Prevents unauthorized entry and exit from emergency doors

Q: Sti release a newly redesigned exit stopper door alarm on april 2018. is this the newer version?

The newer version STI-6400 2018 to current will have a red table of 8 switches, older models have switches labelled JP

Q: Alarm goes off even when key is off. What am I doing wrong?

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.

I had to order a new one to get the key.

Product ID: 736682609

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Details

Color
red
Brand
STI
Power Source
Battery
Product Dimensions
17.3L x 6.9W x
Battery Description
Alkaline

🔊105 dB piercing alarm

🔋long-life 9V alkaline battery included

🛡️virtually unbreakable polycarbonate

Frequently Bought Together

Safety Technology International, Inc. STI-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits or Entries Through Emergency Doors

SmartSign (Pack of 4) 5 x7 inch “Emergency Exit Only - Security Alarm Will Sound If Door is Opened” Sticker Labels, 5 mil Laminated Polyester with SuperStick Adhesive, Red and White, Made in USA

Safety Technology International, Inc. STI-6402 105 dB Exit Stopper® Multifunction Door Alarm for Double Doors with on/off Switch and 9 Volt Battery

Description

🚪🔒 Secure your space with the STI-6400 – where safety meets smart design!

PEACE OF MIND WARRANTY - 3-year polycarbonate and 1-year electronics warranty ensures lasting protection
UNIVERSAL MOUNTING VERSATILITY - Fits almost any door with multiple mounting options for seamless installation
FLEXIBLE ALARM DURATION SETTINGS - Choose 30 seconds, 3 minutes, or continuous alarm modes for tailored security
STOP UNAUTHORIZED ACCESS INSTANTLY - 105 dB alarm grabs immediate attention to deter breaches
BUILT TO WITHSTAND THE TOUGHEST CONDITIONS - Durable polycarbonate housing resists breakage and vandalism

The STI-6400 Exit Stopper by Safety Technology International is a multi-function door alarm designed to prevent unauthorized entry and exit through emergency doors. Featuring a loud 105 dB alarm, virtually unbreakable polycarbonate housing, and flexible alarm duration settings, it offers robust, easy-to-install security. Powered by a long-life 9V alkaline battery and backed by a 3-year warranty on the housing, this device is a cost-effective alternative to heavy-duty horizontal bar alarms, ideal for professional environments seeking reliable door security.

Specifications

Number of Batteries	1 9V batteries required. (included)
Voltage	9 Volts
Control Method	Touch
Noise Level	105 dB
Mounting Type	Door Mount
Sensor Technology	Contact Sensor
UPC	737214686613 662950640011 662950640004
Global Trade Identification Number	00662950640004
Manufacturer	Safety Technology Intl
Model Number	STI-6400
Product Dimensions	17.27 x 6.86 x 1.02 cm; 453.59 g
Material	Polycarbonate
Included Components	9V Battery, Door Alarm, Lead/Magnet
Are Batteries Included	Yes
Battery Type	Alkaline
Item Weight	454 g

Have a Question? See What Others Asked

Sti release a newly redesigned exit stopper door alarm on april 2018. is this the newer version?

How is it installed?

Alarm goes off even when key is off. What am I doing wrong?

Can I order extra keys? We use these in a dorm each summer for a camp and we have lost ours.

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