Manufacturer of the Gemini 501 Series Smoke Detector Testers
Proud to say "Made in the U.S.A."
Gemini 501 Series Smoke Detector Analyzers let you test any brand and any type of smoke detectors any where, including under floor smoke detectors as in computer rooms. It is versatile, fast and easy to use.
  Testing ceiling-mounted smoke detectors Testing duct detectors  
The Gemini Testers produce smoke at a desired concentration instantaneously rather than building it up from zero concentration. This makes smoke alarm testing much faster and efficient.
Testing wall-mounted smoke detectors
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