W Mall&reg; Digital LCD Egg Incubator Thermometer Hygrometer Meter MAX-MIN With Probe TA218C Measures and displays temperature Memory function to recall minimum and maximum temperature and humidity readings Measures Temperature readings 32F to 122F or 0C to 50C Humidity Range : 10% to 98% RH(relative humidity) Probe designed to fit through the vent holes of the Little Giant & Hova Bator Egg Incubators