M5Stack Hall sensor A3144EDoor magnetic alarm induction switch speed measurement
12,10 €
Hall Effect Unit is a Hall sensor Internally integrated with three A3144E Hall induction switches, logic processing is carried out through the 74 series gate integrated circuit. When an S-pole object is close to the front of the hall or the N-pole is close to the back of the hall, a low-level signal can be generated, and the internal LED indicator light will light up.
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