The STI-1100 consists of a clear, tamperproof, tough polycarbonate cover, frame, "IN CASE OF FIRE" message and piezo horn that fits over most manual pull stations. When lifted to gain access to the actual alarm, a piercing 95 or 105 dB warning horn sounds.

The STI-1100 is for flush mount pull stations.


• Protective polycarbonate cover
• Helps stop false alarms
• 95 or 105 dB warning horn
• Flush mount
• UL/cUL Listed

Stopper II with Horn, Flush Mount


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