Model AMS22U and Model AMM20B non-contacting rotary position sensors use magnetic Hall Effect (HE) technology. Single-turn Model AMS22U has a rotational life to 100 million cycles with a 1/8-in. shaft supported by dual ball bearings and a factory programmable 10-360Âş electrical angle. Multiturn Model AMM20B has a rotational life to 50 million cycles, 12-bit resolution and a factory programmable 1080-3600Âş electrical angle.