The product is a precision instrument for measuring solar ultraviolet radiation (UVAB wavelength range) in the atmosphere. It is small in size and easy to use; Measurement range: 0 ~ 70W / ㎡ spectral range: 280 ~ 400nm cosine response: ≤ 4% (when the solar altitude angle is 30 °) response time: ≤ 1s (99%). Power supply mode: DC5V output form: 0 ~ 2.5V working environment: temperature - 50 ℃ ~ 50 ℃ cable grade: rated voltage: 300V temperature grade: 80 ℃