Faith GLS-20ATR na gwajin kai-da-kai yana ba da kariya mai ci gaba daga kurakuran ƙasa, cire haɗin wuta a cikin 1/40 na daƙiƙa idan an gano yanayi mai haɗari.Da zarar an haɗa shi da wuta, wannan ma'aunin GFCI yana gwada kansa ta atomatik kowane awa 2-1/2.Hasken LED mai nuna kore yana kashe idan mashigar baya samun wuta, ta karye, ko kuma idan ta kasance a ƙarshen rayuwa.Slimmer, ƙirar zamani don sauƙi da sauri shigarwa a cikin akwatunan lantarki.Gwada da sake saiti maɓallan sun dace da launin fuskar na'urar don haɗawa cikin sumul.Haɗuwa ko wuce ƙa'idodin UL943 2015.Mai yarda da buƙatun Lambar Lantarki ta ƙasa (NEC).ETL da aka lissafa.Tsarin aminci na rufewa mai jurewa yana toshe damar yin amfani da wuta sai dai idan an saka filogi, yana samar da ƙarin tsaro a gidaje masu yara.