CocoGo Digital Thermometer Hygrometer Probe For Egg Hatching Chick Incubator This LCD digital Thermometer & hygrometer has a 1.5m long probe, which can test temperature and humidity of some special places, it was widely used in Aquarium, Poultry, Reptile, Incubator, Greenhouse and etc. Set probe to display the hygro-temperature at the location of the probe. Measuring Humidity Range: 10%RH ~ 99%RH Humidity Accuracy: +5/-5%; Humidity Display Resolution:1%RH Note:Only read , can't read F. Please ALWAYS calibrate a thermometer before use it.