Precision Solar Energy Meter Solar Light Energy Insolation Tester Description: Choose from two units ² and Btu data retention and retention function. This solar energy tester directly measures consumption without adjustment. Constantly measure for a long time. It is suitable for solar energy measurement, solar energy research, meteorology, agriculture, physical and optical experiments. Specification: Material: electronic components Resolution: 0,1 W/m², 0,1 Btu/(ft²-h) Range error: ±10W/m²[±3 Btu/(ft²-h)] or ±5% of the measured value Temperature error: ± 0,38 W/m²/°C [± 0,12 bTU /(ft²-h)/°C] at 25°C deviation Display: 4-1/ display Value: 19999 Measuring range: 0,1-1999,9 ² 0,1-1999,9 Btu/(ft²-h) Wavelength Range: 340-1100nm Operating temperature and humidity: 0 to 40° above 80% relative humidity Storage temperature and humidity: -10 to 50° than 70% RH Power Supply: 9 V Size Chart: Size: 132x60x38mm /5.20x2.36x1.50 inch The package includes: 1 sztuka solar energy meter 1 sztuka case pack 1-part instruction manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.