Solar Illumination Monitor, Power Meter Style:Radiant Energy Detector SUITABLE FOR ALL WEATHER CONDITIONS:Perfect

SUITABLE FOR ALL WEATHER CONDITIONS:Perfect for damp

Metal Gears = Strength and Durability: The metal gear train inside improves torque and toughness

Its stretchable one-size design comfortably fits most men and women while covering the head

7 batteries * 1

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Solar Illumination Monitor, Power Meter Style:Radiant Energy Detector SUITABLE FOR ALL WEATHER CONDITIONS:PerfectProduct information: Display: 3 1 2 Digital display, 1999 Range: 2000W m2, 634Btu (ft2h) Resolution: 1W m2,1Btu (ft2h) Spectral response: 400 1100nm Accuracy: typical 25 : 10W m2 [3Btu (ft2h)] or 5% Winner of the greatest Other temperature introduction error: 0. 38W m2 [0. 12Btu (ft2h) ] Angle accuracy: When Angle <60, cosine correction <5% Drift: 2% per year Calibration: User calibration Over range: display "OL" Sampling time: 0. 4 seconds Manual