XDB307-2 & -3 & -4 fa'asologa o fa'asalalauga fa'aoso o lo'o fa'amoemoe e fausia mo talosaga fa'a'aisa, fa'aogaina ai'a fa'alogoina piezoresistive sima o lo'o tu'u i totonu o pa apamemea. Faʻatasi ai ma se mamanu faʻapipiʻi ma faʻaoga-faʻaoga, ma se nila faʻainisinia faʻapitoa mo le tau o le mamafa, o nei transmitters e faʻamautinoa ai le lelei tele o le eletise ma le mautu umi. Fuafuaina e faʻafetaui manaʻoga manaʻomia o compressors pusaaisa, latou fetaui ma refrigerants eseese. Faʻaaogaina lautele i le ea malulu ma le pusaaisa alamanuia, o le transmitter e maua ai le saʻo ma le faʻatuatuaina fua o le mamafa.