Temperature: 0~+50ºC (32F~+122F); Humidity: 30%~90%. Accuracy: +/1C(+/-1.8F) at the temperature of 0C~+50C (32F~122F); +/-5% at the temperature of 0C~50C(32F~122F) and the humidity of 40%~80%, +7% at the remaining range.