For sunshine hours sensor, sunshine hours are defined as the sum of the time periods when the direct solar irradiance reaches or exceeds 120w/m2, in hours, with one decimal place. The number of sunshine hours is also called the actual hours of sunshine. The sunshine hours sensor is used to continuously measure the sunshine time. The instrument itself has no moving parts and no power supply, and can be used for long-term observation in the field. It uses three specially designed photodiodes for observation and calculation when there is the sun (direct radiation intensity>120W/㎡).

The sunshine hours sensor adopts imported sensing core, optical material window, aluminum alloy shell structure, and waterproof aerial plug; it has the advantages of solid structure, good sealing, long service life, high measurement accuracy, good stability, long transmission distance, anti- It has the characteristics of strong ability of external interference. Can be widely used in meteorology, environment, agriculture, scientific research and other types of solar sunshine hours measurement.