Smoke detectors represent the first line of defense in early warning detection of fires. But like all sensitive instruments, smoke detectors are designed to operate within a tightly specified window of sensitivity. Over time it is possible for these devices to "drift", making some detectors too sensitive, thereby causing false alarms, or less sensitive, potentially leading to no alarm during an actual emergency.

Fortunately, your friends at KEYSTONE PROTECTION INDUSTRIES have an accurate and cost-effective means of measuring this drift using the Gemini 501B® Smoke Detector Sensitivity Analyzer. Using an aerosol generator the Gemini Smoke Detector Analyzer produces a calibrated, adjustable smoke matching the UL Standard for smoke detectors. Gemini is a "universal" smoke detector tester - it can test all brands of spot-type smoke detectors - and has become the industry standard bearer.

Protect your investment and restore your peace-of-mind.

Sensitivity testing can be done during a routine inspection of your alarm system and is required to be performed at the time of commissioning and every other year thereafter.