Features:Lightweight and compact size, easy to remove and install. Super sensitive probe to measure the temperature and humidity quickly and accurately.With suction cup, easy to fix the sensor in the egg incubator or reptile tank. Large clear LCD display, easy to read the digits. Fahrenheit and Celsius switchable. Great meter to detect the temperature and humidity change in the reptile tank or egg incubator. Specification:Material: ABS Color: BlackPower Supply: 1 pc CR2032 button battery(Included) Testing range: 0-50 / 10%-99%RH Error: 1, 5%RHUpdate frequency: 10sLength of cable: 1.5m Working principle: Resistance thermometerScope of application: Egg incubator / Reptile tank Size: 8.8*4.8*1.4cm/ 3.46*1.89*0.55inch (appr.) Package Included:1 * Thermometer Hygrometer (Battery included)1 * User Manual