Kwa chingwe chowongolera ndi chowongolera mumagetsi apakompyuta pamakompyuta, zida zowongolera zamagetsi, makina akuofesi kapena magawo owongolera, omwe amafunikira mphamvu yochepa komanso chitetezo ku kusokonezedwa ndi ma elekitiroma (EMI) ndi ma radiation a electromagnetic (EMR) okhala ndi utsi wochepa zero halogen ndi chofunikira choletsa moto.