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Gemini Scientific
Since 1982 Gemini Scientific Corporation has produced the universal Gemini Smoke Detector Sensitivity Analyzer. Based on technology developed at the US Bureau of Standards ,now NIST, the Gemini led the way in developing the NFPA 72 sensitivity test standards.

Using an aerosol generator the Gemini Smoke Detector Analyzers produce a calibrated, adjustable smoke matching the UL Standard for smoke detectors. Thereby the Gemini is an "universal" smoke detector tester, it can test all brands and all types of spot detectors.

By utilizing a flexible hose and wands, the Gemini can easily test detectors in all locations: ceiling, sidewall, under floor in computer rooms, and duct detectors.

Gemini is now offering 2 models:

The "classic" 501A/B battery operated model

 

The new 501-B digital, should strap portable model unit.

 

 

For prices see: Gemini Price List

Gemini 501-b
Gemini 501-a
Gemini Price List