*Measurement Range: 0-400mW/cm²; Four range selectable: 400μW, 4000μW, 40mW, 400mW (1000 μW/cm² =1 mW/cm²)*UV sensor spectrum: band pass 320nm ~390nm*Accuracy: ±(4%FS + 2dgt) Calibration under the standard UVA light & and compare; Special tested under the environment RF Field Strength less than 3V/M & frequency less than the 30 MHz only*Sensor structure: exclusive UV photo diode& UV color correction filter.*Sample Time: 2.5 times/s.*Over Range indication: ‘OL’*Operating Temperature & Humidity: -10℃ to 40℃(32℉-104℉) 0～70%Rh*Power Supply: DC 9V (6F22 type) battery (NOT Included), 006P, MN 1604 (PP3) or equivalent (Battery NOT Included)*Operating current: Approx. DC 2.7mA*Dimension: 165x50x32mm (photo detector);160x78x43mm (meter body)Please Kindly Know: Batteries are not included in the package due to Aviation Security Check. Sorry for any inconvenience caused.