4000 pairs of large-screen display with backlight automatically-range digital multimeter A security warning function, suggesting that the correct way to insert the table pen, as well as the location of the preventing wrong fuse operation tips Optocoupler with a computer interface, selectable RS-232 computer interface to connect WINDOWS95/98/2000 and software, user-friendly collection, display, data storage Measurement functions include: DC current, AC current, voltage direct current, AC voltage, resistance, frequency, duty cycle, capacitance and temperature (℃ / ℉), diodes, short-circuit test The longer the high performance and accuracy Greater frequency, capacitance, and temperature (℃ / ℉) to maintain the range of data and related functions Automatic shutdown All offer range overload protection Safety design, in line with IEC1010-1 and UL1244 standards Annex: jacket, pen test table, K type temperature probe, 9V battery, RS-232 computer connection, special software, manuals, certification and warranty card Specifications / weight: 197 *88.4 *41.2 mm / 390 g