STI Stopper II with Horn and Spacer STI-1155, Indoor/Outdoor Rated, Fire Label

Stop false alarms before they start.

A red polycarbonate cover with a built-in horn that fits over a fire alarm pull station. Lift it and the horn sounds, but real alarms can still be activated.

$197.50
In stock
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STI Stopper II with Horn and Spacer STI-1155
Cover lifted: horn soundsSelf-contained 95/105 dB horn
Indoor/outdoor rated coverPolycarbonate, flush mount

One prank pull can empty a building.

False fire alarms disrupt schools, colleges and public buildings. The Stopper II has helped prevent them around the world for decades.

✕
Without itAnyone can pull the alarm on a whim, and nobody notices until the system is already triggered.
✓
With the STI-1155Lifting the cover sounds the horn right away and draws attention, while legitimate alarms can still be activated.
What you get

Built to deter false pulls

The Stopper II adds a warning layer over the pull station without getting in the way of a real emergency.

Horn on cover lift

When the cover is lifted, the self-contained 95/105 dB warning horn sounds and draws immediate attention.

STI Stopper II with Horn and Spacer STI-1155, Indoor/Outdoor Rated, Fire Label
40

years proven effective

The protective polycarbonate cover has been proven effective for over 40 years.

Does not block real alarms

The cover does not restrict legitimate alarms from being activated.

Polycarbonate cover

A protective polycarbonate cover proven effective for over 40 years, rated for indoor and outdoor use.

Battery included

Includes a 9VDC battery, and it is backed by a 3 year guarantee, 1 year on electronics.

The brand

STI

90 STI products at Raztechs.

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Details

Everything you need to know.

BrandSTI
ModelSTI-1155
Product LineStopper II
MaterialPolycarbonate
ColorRed
Height6.2"
Width5"
Depth5.2"
Power SourceBattery
Sound Emission105dB
Indoor/OutdoorIndoor, Outdoor
Country of OriginUS
Description

STI Stopper II with Horn and Spacer STI-1155, Indoor/Outdoor Rated, Fire Label

The STI STI-1155 is a Stopper II with Horn and Spacer (Indoor/Outdoor Rated, Fire Label). It is made for fire alarm, security and facility professionals who need dependable protective cover equipment.

Key Features

  • Protective polycarbonate cover proven effective for over 40 years
  • Indoor/outdoor rated cover helps stop false fire alarms
  • When cover is lifted, horn sounds
  • Does not restrict legitimate alarms from being activated
  • Self-contained 95/105 dB warning horn
  • Includes 9VDC battery
  • Warning horn draws immediate attention
  • Flush mount
  • 3 year guarantee, 1 year on electronics
  • UL/cUL Listed, ADA Compliant

Specifications

  • Brand: STI
  • Model: STI-1155
  • Product Line: Stopper II
  • Product Model: STI-1155
  • Product Series: STI-1100
  • Product Type: Security Cover
  • Material: Polycarbonate
  • Application/Usage: College, Hotel, Indoor, Nursing Station, Outdoor, School
  • Depth: 5.2"
  • Form Factor: Surface Mount
  • Height: 6.2"
  • Product Color: Red
  • Product Material: Polycarbonate
  • Width: 5"
  • Power Source: Battery
  • Features: Flush Mount, Larger sizes and surface mounted pull stations accommodated with STI-3100 conduit spacer
  • Indoor/Outdoor: Indoor, Outdoor
  • Shipping weight: 2.25 lb

Typical Uses

  • Preventing false alarms and vandalism on fire and safety devices
  • Schools, gyms, hospitals and public buildings

Please confirm that the STI-1155 matches your system, panel, mounting and finish requirements before ordering. Contact us with the model of your existing equipment if you need help checking compatibility.

Good to know: Larger sizes and surface mounted pull stations are accommodated with the STI-3100 conduit spacer. Confirm the STI-1155 matches your system and mounting requirements before ordering.

Need help with compatibility?

Looking for a manufacturer part number, compatible replacement, or quantity order? Contact Raztechs for sourcing and quote support.

Request a quote
STI Stopper II with Horn and Spacer STI-1155, Indoor/Outdoor Rated, Fire Label
In the box

STI STI-1155, ready to order.

  • 9VDC battery
$197.50STI-1155

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