will cell phone trigger motion sensor?

I doubt the sensor would pick up the "waves" that a cell phone uses. Its like wind setting off the sensor. Anyways, does anyone know anything about skytec's motion sensors? I have one and cant figure out anything on it.

Back when I had a Nextel phone it would cause my alarm to go off if I left it in my car and it rang. That phone would also cause speakers to buzz and other electrical devices to go crazy when it was about to ring. Now that I have switched to a Sprint phone, no more problems. Different phones give off different amounts of electrical energy. Your phone in the car was probably the problem.