This new incubator has a large, easy to read display which will tell you the temperature, but does not havea digital hygrometer. It also has easy to use temperature controls allowing you to set the temperaturevery easily. This model comes with a fan that will allow for better airflow and even temperature throughout the incubator,leading to more successful hatches. Includes easy to clean plastic bottom liner.MEASURES 18" X 18" X 7 1/2".THIS MODEL IS 110 VOLTS, HAS A digital thermostat but no hygrometer. Troulble shooting techniques: Let the incubator run for about a day before makingtoo many temp adjustments and having a clutchof eggs in the incubator will help stabilize the temp,as the eggs act like a heat sink.