The product is a silicone heating wire, loop machine winding, the temperature is more stable, accurate, and there is no dead angle.With temperature sensor, humidity sensor, automatic temperature control, automatic display of temperature and humidity. 3.There are four cooling fans, balanced stable temperature. Egg capacity:- chicken egg 320, Duck egg:-213, Goose egg;160, Pigeon egg:-480, Quail/bird egg:800 Fully automatic rolling type trays for all size egg hatching with drawer type no need to open LID everytime Fully automatic control all system Five layer with 64 egg on each layer 4 fan PP,PE ABS plastic