Thông tin sản phẩm Hãng sản xuất: SEW - Đài Loan Model: 1620 ER Microprocessor controlled. Measure earth resistance in three ranges. (40 Ohm/400 Ohm/4k Ohm) Capable of measuring earth voltage. 3-3/4 digit (4000 counts). LCD backlight display. 2mA measuring current permits the testing of earth resistance without tripping earth leakage current circuit breakers in the circuit. Data Hold function. Relative function. Auto power off function. Battery operated. Low Battery indication. Small and light weight, easy to use. EN 61010-1 CAT IV 400V EN 61326-1, EN 61557-1, EN 61557-5