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Technical Information


[ patent listed ]

Advanced Temperature Compensation
Appropriate models

CX-502/502AM, BX-80N/80NR, VX-402/402REC

At a higher ambient temperature, the temperature difference between the background and a human body will be reduced. In this case the PIR could fail to readily detect a human body. With conventional temperature compensation functions, the sensitivity of detector must be set higher at 35°C than the sensitivity at 25°C (normal temperature) in order for the detector to offer a stable performance. However, with this setting, the sensitivity of the detector is excessively high at 40°C or over, which could lead to various problems. To overcome this drawback, Optex's advanced temperature compensation function allows the detector's sensitivity to automatically drop at 40°C or higher so that the detector can perform more reliably within a wider ambient temperature range.