Thông tin sản phẩm Hãng sản xuất: SEW - Đài Loan Model: 1820 ER Capable of measuring earth voltage (Vac). 2mA measuring current permits eath resistance to test without tripping earth leakage current breakers in the circuit. Test leads are supplied as standard accessories for simplified two-wire measuring system. Data hold function. Battery operated. IEC/EN61010-1, iec 61557-5 CAT II 300V. Calibration performed with supplied test leads.