Accuracy: ± 1.5%RH, ± 0.3 ºc (at 23 ± 2 ?) 

Repeatability: better than 0.5%RH and 0.1 ? 

Stability: every year is better than 1.0%RH and 0.1 ? 

Ordinary room air conditioning sensor accuracy is ± 3%RH, ± 1 ? or so is enough;