Ke hoʻohana ʻia no nā noi nānā ʻoihana, hiki i nā mea ʻike ke hoʻopaʻa i nā kūlana o ka lewa. Hoʻohana ʻia nā hōʻailona sensor i loko o ke kaʻina hana e hahai mau i nā loli i ka wahi e nānā ʻia nei. Hiki ke loaʻa nā hōʻailona kikohoʻe a me nā hōʻailona analogue.
ʻO ka maʻamau, hana ʻia kahi waiwai uila a i ʻole ka waiwai o kēia manawa e kūlike ana me nā loli kino e nānā ʻia nei.
Pono ka hana ʻana i nā hōʻailona analog i ka wā e pono ai nā kaʻina hana automation e mālama mau a hiki paha i nā kūlana i wehewehe ʻia. He mea nui loa kēia no nā noi automation kaʻina hana. Hoʻohana pinepine ʻia nā hōʻailona uila maʻamau no ka ʻenekinia kaʻina hana. Ua hoʻokumu nā au maʻamau analog / voltage 0(4)...20 mA/ 0...10 V iā lākou iho he mau ana kino a me nā loli kaohi.