LCD Display Solar Power Radiation Meter 1. Resolution: 0.1W, 0.1 Btu(ft2-h) 2. Range error: 10W [3 Btu(ft2-h)] or 5% of measured value 3. Temperature error: 0.38W [0.12 Btu(ft2-h)] when deviating from 25 4. Display: 3-34 LCD display, display value 3999 5. Overload display: "OL" 6. Range: 0.1-399.9 W, 1-3999 W, 0.1-399.9 Btu(ft2-h), 1-3999 Btu(ft2-h) 7. Sampling time: 0.25 secondstime 8. Operating temperature and humidity: 0C to 50C less than 80%RH 9. Storage temperature and humidity: -10C to 60C less than 70%RH 10. Required battery: 9V battery (not included!) 11. Battery life: about 100 hours 12. SM206 solar power meter is a precision instrument for measuring light intensity. It is used in solar radiation measurement, solar research, physical and optical experiments, meteorology, agriculture, and can also be used to measure glass light intensity to verify glass performance. It is mainly used for car film measurement, such as: window light intensity measurement 13. W and Btu two unit options 14. Peak hold function, data hold function, direct measurement without adjustment, long-term stable measurement 15. Dimensions and weight: 132 x 60 x 38mm 16. Weight: about 150g