
The price is the best product I know. More expensive ones in the $60-$80 range do the same. I bought this particular model in 2011 until an electrician borrowed it and hooked it up to a live wire, thinking it would adjust the AC frequency. Now in 2021 I have bought the same model again and it works just as well as this one.

π Dioxide Controller for Digital Gas Monitoring
5 Review

π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review

Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review

π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review