VEVOR Egg Incubator, Incubators for Hatching Eggs, Automatic Egg Turner with with Temperature and Humidity Control, 12 Eggs Poultry Hatcher with ABS Transparent Shell for Chicken, Duck, Quail
Humidity is maintained as long as there is water at the bottom. The needle bottle is used to add water to the incubator, and the spray bottle is used to spray water on the eggs during the last 3 days of incubation.
The product description mentions that it has an integrated temperature and humidity sensor for real-time monitoring. However, customers did not discuss humidity control in their reviews.