I have two garage doors, one with an EcoLink tilt sensor, the other with an EcoLink door/window sensor.
I’ve got the tilt sensor on the top panel of the door, and I’d estimate the door has to rise up about 6-12" before it detects it. I installed that sensor back in Sep 2018, and when paired it created a “phantom” device that I had to manipulate a bit. It sounds like from posts I have seen here that this problem was fixed in some later firmware version.
The door/window sensor detects less than 1" of door rising. But the gap between magnet and sensor is a bit large in my setup, and the magnet that came with the sensor was a bit too weak. So I stacked two little round magnets that I bought at Home Depot and that works. I have them magnetically attached to the door, with the sensor body mounted to the wall.