Máy đo điện trở Milliohm Extech 380562 General Specifications Circuit Custom one-chip LSI microprocessor circuit Display 0.7" (18 mm) 2000 Count LED Display Connection type 4-Terminal Kelvin Measurement ranges Seven ranges (see listing below) Test voltage 5V DC Comparator Built-in HI/LO/GO testing with audible beeper Zero adjust Automatic (no adjustment necessary) Over-range indication Display reads "1____" when the reading is out of range Operating Temperature 32°F to 122°F (0°C to 50°C) Operating Humidity Max. 80% RH Power Supply 220V ±15%, 50/60Hz Weight 4.85 lbs (2.2kg) Dimensions 11 x 8 x 3.5" (280 x 210 x 90mm)