Features:
1. This meter is a precision instrument measuring the intensity of sunlight.
2. There are two units that can be selected: W/m² and Btu.
3. It supports maximum value hold function and data hold function.
4. Measure directly without adjustment, steadily measure for a long period.
5. Widely used for solar radiation measurement, solar energy research, meteorology, agriculture, physical and optical experiments.

Specification:
Model: SM206
Resolution: 0.1W/m², 0.1Btu/(ft²-h)
Range Error: ± (10%R+2dgts)R: readings
Temperature Error: ±0.38W/m²/℃[±0.12Btu/(ft²-h)/℃] deviation at 25°C
Display: 4-1/2 LCD display, maximum display numerical value 19999
Overload Display: OL
Shift:
Measurement Range: 0.1-1999.9W/m², 0.1-1999.9Btu/(ft²-h)
Sampling Time: 2.5 seconds/time
Operating Temperature and Humidity: 0~40℃,
Storage Temperature and Humidity: -10~50℃,
Battery: 9V battery (NOT included)
Size: Approx. 132 x 60 x 38mm / 5.2 x 2.4 x 1.5in
Weight: 325g / 11.5oz (approx.)

Package list:
1 * Solar Radiation Measuring Instrument (battery is NOT included)
1 * User Manual
1 * Packing Box