The method of automatic heat preservation when the incubator is closed is as follows: 1. Press and hold the automatic heat preservation key for 5 seconds, and you can cancel the automatic heat preservation setting when you hear a "click".

2. You can also press and hold the manual water adding key and the automatic water boiling key, and the time can be set between 20 and 50. Press and hold the heat preservation key for 5 seconds, and the automatic temperature setting is successful. Otherwise, press and hold the automatic heat preservation key for 5 seconds to cancel the automatic temperature setting.