Far-infrared kub cua units yog cov khoom siv uas siv lub hauv paus ntsiab lus ntawm far-infrared hluav taws xob rau cua sov. Lawv hloov hluav taws xob hluav taws xob mus rau qhov deb-infrared hluav taws xob hluav taws xob los ntawm cov cua kub tshwj xeeb, yog li cua sov huab cua lossis khoom.
Cov txheej txheem cua sov no muaj ntau yam zoo, suav nrog kev ua haujlwm siab, txuag hluav taws xob, thiab kev phooj ywg ib puag ncig, thiab yog li ntawd tau siv dav hauv ntau yam xws li kev lag luam, kev ua liaj ua teb, kev lag luam, thiab kev siv pej xeem.