LED Light Meter - Use LED Light Meter to measure LED light output.LED Light Meter features include: High Precision 0-200,000 Lux(20,000 FC) +/-3% Range Auto & Manual range switching Inquiry function for max & min values Data hold functionPeak Value Measurement Zero Calibration FunctionRelative Value Measurement3-1/2" LCD Display FC/LUX Conversion Function Out of Range IndicationLow Battery IndicatorTouch Tone/Mute FunctionAutoPower OffBelow is more info on our LED Light Meter