STI-1100 Stopper II® Pull Station Cover — Flush Mount with Horn
The STI-1100 Stopper II is the standard flush-mount, horn-equipped model in the Stopper II protective cover family. Designed for recessed or flush-mounted pull station installations, the STI-1100 features an integrated horn that activates the moment the cover is lifted — alerting nearby staff before the pull station is actually triggered. This pre-alarm warning gives personnel the opportunity to investigate and prevent a costly false alarm event.
Built from impact-resistant polycarbonate, the STI-1100 sits flush against the wall for a clean, low-profile installation that suits offices, schools, hospitals, hotels, and commercial buildings. The bright red cover maintains high visibility so the pull station is easy to find in a real emergency, while the horn deters accidental or mischievous activations before they escalate.
The STI-1100 is an ideal choice wherever a flush-mount pull station needs reliable horn-equipped protection. For larger installation quantities, the STI-1100 is also available as the STI-1100CP6 six-pack contractor pack. Order individual STI-1100 units for replacements, testing, or small installations.
- Integrated horn sounds when cover is lifted
- Flush mount — ideal for recessed pull station housings
- Impact-resistant polycarbonate
- Indoor-rated
- Single-unit sale (see also STI-1100CP6 for 6-packs)
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 1.6 lbs |
|---|---|
| Dimensions | 7.2 × 10.2 × 3.3 in |
| Condition | New |
| Cross Reference | STI-1100CP6 |
| Part Type | Pull Station Cover |
| Specification | With horn, flush mount, indoor, polycarbonate |











