Lighting is a critical factor in employee productivity, well-being and health. Light sources that are too bright are blinding, while those that are too dim can lead to concentration problems and headaches. With the testo 545 lux meter you can measure the illuminance of all light sources – quickly, easily and precisely. The meter is compatible with almost all commercially available LEDs. By automatically calculating time and point averages, the lux meter shows you all the information you need at a glance. The testo 545 can work with the testo Smart App mobile app. With his help you can configure the meter, visualize and store the measured values and document them in a convenient way. The app also turns your smartphone into a second display.