HG23 humidity sensor 4.1 Input power: 1VAC (sine wave), 1kHz 4.2 Operating temperature range: -20=J ~ 70=J 4.3 Operating humidity range: 95 %RH or less 4.5 Accuracy: f+2.5 %RH (at 25=J, 60 %RH) 4.6 Hysteresis: within 2 %RH (40 %RH ~ 80 %RH) 4.7 Stability: 1 year < 2 %RH 500pcs/bag 10000pcs/carton