Smart Lux meter is a tool in extended set of the Smart Tools® collection. This Light Meter measures the ambient brightness with embedded light sensor. It is used to adjust the lighting required for plants or to check the brightness of a study room. Usage is very simple. Make sure that your screen with the sensor is facing the ambient light source (lamp, LED lighting, window, sun ...). If the sensor is facing your face or ceiling, the measurement will be poor. The measured value can be used for reference, and optimized by [Calibration] menu. In the morning or evening, sit by the window and measure the world getting bright or dark. It will be an interesting experience. * Do you want ad-free version? download [Smart Meter Pro]. For more information, watch YouTube and visit the blog. Thank you.