I've needed these for a while. I am very impressed with the quality and so far every item I have tested has been close to accurate (within a few thousand). Highly recommended.
π Dioxide Controller for Digital Gas Monitoring
5 Review
Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review
π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review
π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review