Cov txheej txheem muaj raws li hauv qab no: U: UL, U1: UL (Class I Division 2 Cov Khoom Siv rau Cov Khoom Siv Hluav Taws Xob), C: CSA, UC: cULus, UC1: cULus (Class I Division 2 Cov Khoom Siv rau Cov Khoom Siv Hluav Taws Xob), CU: cUL , N: NK, L: Lloyd, thiab CE: EC Cov Lus Qhia.
Hu rau koj tus neeg sawv cev OMRON kom paub meej ntxiv thiab cov xwm txheej siv tau rau cov qauv no.