There are three kinds of tilt sensors Commonly used with smartthings.
One involves a ball bearing which rolls down a channel inside the sensor and when it moves it changes the state.
The second involves an accelerometer which is using XYZ coordinates, which uses vibration. Accelerometers have an initial 000 setting which based on their position when originally paired to the network.
The third involves a gyroscope, which is also using XYZ coordinates, but which uses gravity so that it always knows which way is “down. “
Aeotec’s is a gyroscope. I’m not sure where they patented it, but I would write to their support if you want to know more about their “spatial intrusion algorithm.” If I had to guess, and this is purely a guess, it has something to do with the Contact sensor magnet information being combined with the accelerometer to figure out if the window is moving in a way other than expected for normal opening. That would be your intrusion alert. But that’s purely a guess, and aeotec’s English translations aren’t Always idiomatic, so for all I know it could just be a gyroscope with a tamper alert.