Current SIR Sensor Technology

A SIR sensor housing is shown in Figure 1. The housing protects the sensing elements from physical damage and harm. A filter (getter) and retainer clip hold the sensing elements in place and prevent dust, smoke particles, liquid water, and other chemicals from entering the sensor chamber. The SIR sensing elements are held in optical alignment by the sensor housing placed between an infrared light emitting diode (LED) and a photodiode. Only COSTAR® carbon monoxide detectors give reliable protection without false alarms. Liquid electrochemical CO sensors — used in most competitors’ detectors — are sensitive to many common household gases, particularly from cleaning products and air fresheners. Their frequent false alarms can lead people to ignore valid alerts, with fatal results. COSTAR® detectors, on the other hand, react only to CO gas, and will not react to gases found in household products.