American Time & Signal Company

Stopper® II Guards

Clear polycarbonate stopper II guard

The Stopper II and Mini Stopper are unique products designed to prevent false fire alarms (without restricting legitimate alarms) and prevent the theft and vandalism of the things that protect us, such as fire alarm stations, smoke detectors and fire extinguishers.


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Features Additional Images
  • Fits all modern pull stations
  • Mini Stopper fits pull stations up to 4 1/8"w x 4 3/4"h x 1 1/2"d (5 1/2"h without horn)
  • Larger sizes and surface-mounted pull stations can be accommodated with spacer
  • Power source is a 9vdc battery (included) on standard units
  • Constructed of clear, super tough polycarbonate
  • ADA Compliant
  • FM Approved

Polycarbonate mini stopper II guard
STI6600

Stopper II
Model No. Description Each Quantity
STI1100-WEB With horn, flush mount, red $99.95
STI1130-WEB With horn and spacer $104.95
STI1200-WEB No horn, flush mount $66.95
STI1230-WEB No horn, with spacer $78.95

Mini Stopper
Model No. Description Each Quantity
STI6600-WEB With horn, flush mount, red $82.95
STI6605-WEB With horn, 1 1/2" spacer, clear $96.95
STI6500-WEB No horn, flush mount, clear $37.95
STI6510-WEB $40.95

140 3rd Street South, PO Box 707, Dassel, MN 55325-0707  |  Phone: 800-328-8996  |  Fax: 800-789-1882
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