Mphamvu ya kuwala kuchokera ku chipangizo chilichonse cha LED kapena laser therapy ikhoza kuyesedwa ndi 'solar power meter' - chinthu chomwe nthawi zambiri chimakhala chogwirizana ndi kuwala pakati pa 400nm - 1100nm - chomwe chimapereka kuwerenga mu mW/cm² kapena W/m² (100W/m² = 10mW/cm²).
Ndi choyezera mphamvu ya dzuwa ndi rula, mutha kuyeza kuchuluka kwa mphamvu ya kuwala kwanu potengera mtunda.
Mukhoza kuyesa LED kapena laser iliyonse kuti mudziwe kuchuluka kwa mphamvu pamalo enaake. Mwatsoka, magetsi a Full spectrum monga ma incandescent ndi magetsi otentha sangayesedwe motere chifukwa mphamvu zambiri sizili muyeso woyenera wa kuwala, kotero mawerengedwewo adzakwezedwa. Ma laser ndi ma LED amapereka mawerengedwe olondola chifukwa amatulutsa mafunde +/-20 okha a kutalika kwa mphamvu zomwe zatchulidwa. Ma 'Solar' power meter' mwachiwonekere amapangidwira kuyeza kuwala kwa dzuwa, kotero sali olinganizidwa bwino poyezera kutalika kwa mphamvu imodzi ya kuwala kwa LED - mawerengedwewo adzakhala ofanana ndi malo owonetsera koma olondola mokwanira. Pali ma LED light meter olondola kwambiri (ndi okwera mtengo).