LCD Digital Integrated hygrometer thermometer with an external sensor for Birds Incubator is widely used in birds, reptiles, hatchery, greenhouse and so on 1.5 m long probe can check the temperature and humidity of some special places clear LCD digital display is supplied with 2 pcs. Battery Specifications: Dimensions: approx. 48 x 28.6 x 15.2 cm LCD Size: approx. 35.7×16.8 cm Sensor Cable Length: 1.5 m Measuring range Humidity: 10% -99% accuracy humidity: + -5% Humidity Display Resolution: 1% measurement range Temperature: -20 ~ 70 degrees Celsius Temperature accuracy: + -1 degrees Celsius (at normal temperature) operating voltage: 1.5 V DC power Source: 2 x AG13 button cell (included) humidity selection: 10 seconds package: 1 x Digital Thermometer-hygrometer 2 x LR44 button cell