Smart Meter Pro v2.0 (Smart Tools)

Smart Meter Pro is the NEW 4th set of Smart Tools® collection. #MeterPro It includes 3 tools (Sound meter, Vibration meter and Lux meter). ① Sound Meter SPL (sound pressure level) meter uses your microphone to measure noise volume in decibels(db), and shows a reference. We calibrated a lot of Android devices using an actual sound meter with dB(A). ② Vibration Meter Vibrometer uses the phone sensors to measure vibration or an earthquake, and it shows a reference as a seism detector. ③ Lux meter 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. #light