Confusion about type of device on ADT hub: "sensor" vs "door"?

When I add devices to my ADT hub, under the “location of device” section I can choose the location, room and device. Under device I can set choose smoke or sensor if it’s a smoke detector; door, window or sensor if its a contact sensor. My question is what does choosing “sensor” instead of “door” or “smoke” do?

Sensors coded as door will have the entrance delay before the Alarm goes off. Perimeter or Window Sensor will set the alarm off immediately.

I get the difference between door and window, but I don’t know what the sensor option is. Same with the smoke detector, I can choose smoke or sensor.

Sensor means it isn’t used for security


Oh, ok. Thanks! :slightly_smiling_face: