... compensation 4. Drinking water,Swimming pool and Tap water PH controller/PH meter/PH electrode ApplicationIndustrial waste water,pure water, circulating water,food ... 60degree;0~95% relative humidity, no condensing5.Storage: -20~+70°C;0~95% relative humidity, no condensing6.Relay: 2 relays; ... , Automatic compensation range: 0~100°C8.Accuracy: 0.25% 9.Stability: 0.1% of measuring range in 24 hours, no ...