The Japanese manufacture Optex was founded in 1979 and is now becoming a world-leading company In the area of security detectors with its unique Infrared detectlon technology.(security manufacturer,security,sensor,security sensor,outdoor,indoor,outdoor sensor,indoor sensor,detector)

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.