### How Do You Properly Measure Intensity of Red Light Therapy ...

May 07, 2021· UT385 Laser Power meter from UNI-T (~$189) - sold on eBay, AliExpress, and Alibaba; LaserBee HLPM II and Multi-meter (~$100) Now these laser power meters have two important steps to take a correct intensity measurement. The output is in mW, so you need to divide the measurement by the sensor area (basic geometry) to get mW/cm^2.