Digital thermometer and hygrometer for precise control of temperature and humidity in terrariums, vivariums, reptile tanks or even breeders and incubators. The device indicates the temperature on the outside sensor and on the inner gauge External sensors with two 1.5 m cables and suction cups Internal temperature: -10 C to +50 C. / External temperature: -50 C to +70 C. / Humidity measurement: 10-99% RH Maximum and minimum recording function. Measurements in degrees Celsius and Fahrenheit The main unit consists of a magnet, clip and holder Digital thermometer and hygrometer for precise temperature and humidity control in terrariums, vivariums, reptile tanks or even breeders and incubators. The device indicates the temperature on the outdoor sensor and on the inner gauge. Maximum and minimum recording function. Measurements in degrees Celsius and Fahrenheit. Internal temperature: -10 C to +50 C. Outdoor temperature: -50 C to +70 C. Humidity measurement: 10-99% RH. Clip-on frame for vertical support. Requires AAA batteries (included).