Hoʻohana ka sensor wikiwiki i ka ʻenehana induction electromagnetic passive.Hoʻokiʻoki ka mea hana i ka neʻe ʻana o ke kahua magnetic me nā hōʻailona pulse sinusoidal, i hōʻiliʻili ʻia a helu ʻia e MCU no ka loaʻa ʻana o ka wikiwiki.
