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TABLE OF CONTENTS
WARNINGS
All units are recommended for indoor use. Unit must be tested periodically to verify the life of
battery. STI recommends you change the 9 Volt battery twice a year. Installer may need to
purchase a simple audio-meter, typically available at your local electronics store, to measure the
sound in areas where the alarm is expected to be heard during normal noise environment.
Results from this test may prove it beneficial to purchase additional exit stopper units. When
purchasing a remote unit (STI-6403) you will need to periodically test the connections to make
sure audibles function at a sound level to alert staff. Maximum of three STI-6403 may be used
in parallel.
All specifications and information shown are current as of publication and subject to change
without notice.
• Warnings and Cautions ................................................................................................Page 2
• Warranty Information ..................................................................................................Page 2
• Specifications ................................................................................................................Page 3
1. Dimensions ..............................................................................................................Page 3
2. Polycarbonate ..........................................................................................................Page 3
3. Electronics ................................................................................................................Page 3
4. Remote Horn ............................................................................................................Page 3
• Circuit Board Set-Up......................................................................................................Page 4
• Terminal Strip Layout....................................................................................................Page 4
• Switch Settings..............................................................................................................Page 4
• Alarm Feature Description............................................................................................Page 5
• Installation Instructions All Units / STI-6400 ..............................................................Page 5
• Mounting Options ........................................................................................................Page 6
• STI-6402 Double Door additional install notes ........................................................Page 7
• STI-6403 Remote Horn additional install notes ......................................................Page 7
• STI-6404 Double Door with Remote Horn additional install notes ........................Page 7
• STI-6405 Exit Stopper with Momentary Reset ........................................................Page 7
WARRANTY INFORMATION
Three year guarantee against breakage of polycarbonate in normal use (one year on electro
mechanical and electronic components).