Specifications Measuring range: Temperature: 0C~+50C (32F~+122F); Humidity: 20%~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. Resolution: Temperature 0.1C(0.1F); Humidity 1%. Battery: 1.5V AAA LCD Display:35X27MM unit size:64X86X20MM