What is sensor drying?
Similarly, you may ask, how does Sensor Dry work?
The moisture sensor does what it's name implies–senses moisture. If you use the “auto-dry” setting on your clothes dryer, this sensor will keep tabs on when your clothes are dry, and turn the dryer off automatically. This can save you a lot of money and reduce carbon emissions substantially.
Herein, how do you know if your dryer sensor is bad?
Put the dryer into the test, open the door and then with wet fingers, short across the two moisture sensors. It should beep unless there is an open sensor circuit. Any Ohm meter will measure continuity.
Use sensor technology to detect when clothes are dry then stops to save energy and prevent over-drying that can damage clothes. Are more expensive than timer-only driers but do save you on your energy bills because they only dry clothes for as long as is needed.