This LCD digital thermometer and hygrometer has a 1m long probe, which can test the temperature and humidity of some special places It measures the temperature range from -50 degrees Celsius to 110 degrees Celsius and the temperature range operating temperature from -10 degrees Celsius to 50 degrees Celsius With LCD display, better visual effects, you can see the temperature in the distance Power supply: 2 x LR44 1.5V button batteries (included) It has been widely used in aquarium, poultry, reptile, incubator, greenhouse and etc