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 and50 C. or External temperature: -50 C to and70 C. or Humidity measurement: 10-99 percent 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 and50 C. Outdoor temperature: -50 C to and70 C. Humidity measurement: 10-99 percent RH. Clip-on frame for vertical support. Requires AAA batteries (included). Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store