The Extech product IN this category appears to be poorly made and unreliable. While it did have some decent features, the measurements were often inconsistent and inaccurate..
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§ UEi Test Instruments DAFM3B Digital Multimeter
6 Review
Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review