Ko te arotahi hihi-whero roa (LWIR) he mea kāore i te whakamataohia, nō reira, he iti ake te aro. Mā tēnei ka taea e te kaiwhakamahi te kite mā roto i te puehu, i te paowa rānei, ā, he mea tino whai hua ēnei arotahi i roto i ētahi taiao me ngā whakamahinga. Ko te whānuitanga o te tirohanga o te arotahi e whakawhirinaki ana ki te roa o te arotahi me te rahi o te pūoko.
E 20 tau te roangaru e arotahi ana ki te whakarato i ngā hua whatu tino tika.