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Alarm and Chime Products

Did You Know?
Can’t hear your existing doorbell in your basement, garage, shed, etc. With wireless ease extend the chime to greater distances.

Extend Chime
Did You Know?
You may spot a Stopper during your next vacation: St. Louis Arch, San Francisco, Antartica, Disney, etc.

Stopper II
Did You Know?
We have the most complete line of pneumatic buttons in the industry.

Pneumatic
Did You Know?
Rex the Barking Dog Alarm can plug into a timer and only be on guard from 11:00 p.m. to 7:00 a.m.

Bark  Bark!
Featured Product

STI-6205
Defibrillator Theft Stopper®

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About STI Alarm and Chime Products

Alarms and chimes act as inexpensive security devices helping to stop theft, misuse and vandalism.

A medicine cabinet chime and a gun cabinet chime serve different end purposes, for example, but are essentially both security devices to help prevent unauthorized entry.

An Exit Stopper, garage door alarm, other open door alarm or window alert prevents theft from home or business premises, while a wireless chime or alert protects mailboxes, driveways, sheds and fences.