Designed for use with ovens and ranges. Similar to a thermostat; it measures and regulates the internal temperature of your oven cavity. There is an adapter at one end, a probe at the other, and they are connected by an insulated wire. The probe is approximately 7 inches long. You can test the sensor with a multi-meter for functionality. You need to check the model-specific manual to determine what the proper resistance is for your specific appliance.