FireProtect 2 is AJAX 2nd generation detector designed for instant and highly accurate fire detection. The patented smoke chamber is dust proof and impenetrable to insects. This avoids the need to clean the detector, unlike other brands, to maintain accurate and reliable detection. The detector uses dual optic sensors in 2 separate chambers to distinguish between smoke and steam. Two thermistor heat sensors provide rapid detection of buring synthetics and optional CO sensor monitors hazardous carbon monoxide levels.