Oluyẹwo Resistance Ilẹ-ero AC ti o ṣee ṣe lati ṣe idanwo Resistance Ilẹ ti Awọn ohun elo Ile, Awọn ohun elo Itanna, Ohun elo Itanna, Awọn Irinṣẹ Ina, Awọn ohun elo Alapapo Ina Ati Awọn ọja miiran.
RK9930: AC (3-30) A
RK9930A: AC (3-45) A
RK9930B: AC (3-60) A