R125 infrared kupisa mwenje zvinoreva kuti yekunze dhayamita yegirobhu iri 125mm,
iro R40 kupisa mwenje girobhu rinoreva chimiro chegirobhu,
zvakafanana. ndokumbirawo uone zvinotevera:

Iwo ndiwo akaomarara girazi infrared mwenje, girazi rakaomarara rinopenya chiratidzo, saka infrared kupisa mwenje unoshandiswa zvakanyanya kune zvipfuyo, semuenzaniso, kune nguruve hita, piglet hita, kupisa mwenje girobhu yehuku, nezvimwe.