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1. FIRE PRODUCTS
For more information, call 1-800-888-4784 (4STI) or visit www.sti-usa.com
KEY features
General Information
· Proven effective for more than
30 years in helping stop false fire
alarms without restricting legitimate
alarms.
· Can be used as a guard against
physical damage to a manual pull
station.
· Three year guarantee against
breakage of polycarbonate in
normal use.
Design
· Cover includes four inch deep back
box.
· Not locked, easy to open.
· The Stopper II design is a registered
trademark of Safety Technology
International, Inc.
Construction
· UL Listed, ADA Compliant for
operation.
· The thick, clear polycarbonate
cover is UV-stabilized.
Installation
· Typical working properties of
polycarbonate are -40° to 250°F
(-40° to 121°C).
Options
· Comes standard with an “In Case
of Fire - Lift Cover Pull Fire Alarm”
label.
· Custom label available for a fee.
Product Overview
This protective cover has been helping stop malicious and accidental false fire alarms
around the world for over 30 years, without restricting legitimate alarms. This version
of the Stopper II has a four inch deep enclosed backbox which allows it to be installed
in wet or wash down areas (such as kitchens, cafeterias, meat packing plants,
showers, outdoors, etc.). It helps protect against physical damage (both accidental and
intentional), dirt and grime. The enclosure is not locked which makes it easy to open
for legitimate operation.
how it works
STI-1200A consists of a clear, tamperproof, tough polycarbonate shield, a housing for
an instructional operation label, gasket, conduit hub and a four inch deep backbox.
The standard STI-1200A accommodates most manual pull stations and is marked with
an “In Case of Fire” message, but can be custom labeled and used to protect other
devices. The cover allows an outdoor rated addressable manual pull station to be
installed in wash down areas.
STI Stopper II®
WITH “A” BACKBOX
STI-1200A
ADACompliant
®

2. Printed in U.S.A., © 1987-2009 Safety Technology International, Inc.
2306 Airport Road
Waterford, Michigan
48327, USA
Tel: 248-673-9898
Fax: 248-673-1246
Toll-free: 800-888-4784
info@sti-usa.com
www.sti-usa.com
Unit 49G Pipers Road
Park Farm Industrial Estate
Redditch, Worcestershire
B98 OHU England
Tel: 44 (0) 1527 520 999
Fax: 44 (0) 1527 501 999
www.sti-europe.com
04/11Subject to change without notice.
approvals warranty
TESTING
It has been tested and approved or listed by:
· Underwriter Laboratories No. S2466.
· ADA Compliant.
· The station cover, when mounted on a smooth surface,
provides a rain tight seal similar to a 3R enclosure rating.
WARRANTY
Three year guarantee against breakage of polycarbonate in
normal use.
STI Stopper II®
with “A” Backbox
Dimensions and Technical Information
model available
STI-1200A Stopper II with 4 inch deep backbox
A-A
9.03 in.
(229mm)
8.41 in.
(213mm)
10.32 in.
(262mm)
9.89 in.
(251mm)
4.33 in.
(110mm)
6.37 in.
(162mm)
5.58 in.
(142mm)
7.62 in.
(194mm)
4.32 in.
(110mm)
2.72 in. (69mm)
4.49 in.
(114mm)
4.12 in.
(105mm)
A A
IMPORTANT NOTE: FOR WET OR WASHDOWN AREAS,
STI RECOMMENDS DRILLING (2) 1/8 in.(3mm)
DIAMETER WEEP HOLES IN THIS AREA TO PREVENT
THE BUILD-UP OF WATER INSIDE THE ENCLOSURE WHICH
MAY CAUSE DAMAGE TO ELECTRONIC COMPONENTS
AVIS IMPORTANT: DANS LE CAS DES ZONES HUMIDES OU
À APPLICATIONS SANITAIRES, STI RECOMMANDE LE
PERÇAGE DANS CES ZONES DE DEUX (2) BARBACANES
DE 1/8 PO (3 MM) DE DIAMÈTRE AFIN D’ÉVITER
L’ACCUMULATION D’EAU DANS LE BOÎTIER, CE QUI RISQUE
D’ENDOMMAGER LES COMPOSANTS ÉLECTRONIQUES
4 5 8 12 7
9
13
11
10
14
15
18 1 362
16
17
19