Obviously not calibrated as even in a very quiet room with no conversations the settings jump around in the 40-50 decibel range. It was a big waste of money.
π₯ Advanced Testo Wireless Hot Wire Anemometer Technology
4 Review
π¬οΈ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review
Digital multimeter RGK DM-12
6 Review
π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review