Kusam Meco SPM11 Solar Power Meter

Features :
• Super low price, high precision.
• End-mount light sensor.
• Select either power or transmission.
• Overload display OL.
• Select either W/m ² or BTU / (ft² *h) units
• Data Hold / MAX / Min modes.
• Stable for long use long time stability.
• Backlight Display
• Measurable light sources, including all visible light.

General Specifications :
• Display : 3½ digits LCD with maximum reading 1999
• Range : 1999W/m2, 634 BTU (ft2*h) .
• Resolution : 1W/m2, 1BTU (ft2*h) ..
• Accuracy : < ±3/ year
• Accuracy : Typically within ±10W / m2 { ± 3BTU / (ft 2*h)} or ± 5%, whichever is greater in sunlight;
Additional temperature induced error ± 0.38 W / m2 / °C {±0.12BTU/(ft 2*h)/°C} from 25°C
• Angular Accuracy : Cosine corrected <5% for angles <60°
• Drift : < ± 2% / per year
• Over-input : Display shows “OL”
• Operating temp. & RH : 5°C~40°C, below 80%RH.
• Storage temp. & RH : -10°C~60°C, below 70% RH.
• Sampling time : Approx. 0.25 second
• Battery life : approx. 100hr.
• Dimensions : 132(L) x 60(W) x 38(H)mm,
• Weight : approx. 150g.