The Ridgid DM-100 Micro Digital Multimeter is a True RMS and AutoRanging unit, which provides accurate and fast measurements in all applications. It features 11 different electrical functions ranging from AC/DC Voltage and Current (1,000 volt) to temperature measurements. The multimeter has a double moulded water-resistant (1m) IP67 housing. It is also drop-proof and perfectly suitable for use in the harshest job site conditions. An extra large backlit LCD display provides easy and clear readings. The DM-100 is rated for industrial use (CAT III-1000V and IV-600V). Supplied in a soft carrying case with double-moulded test leads, Type K temperature probe and a 9V battery. Functions and Range Voltage AC/DC 400.0mV - 1,000V. Current AC/DC 400.0&microA - 10A. Resistance 400.0 - 40.00M. Capacitance 4.000nF - 200.0&microF. Frequency 9.999Hz - 9.999MHz. Duty Cycle 0.1% - 99.9%. Diode Check 1.5V. Continuity Test 150. Temperature -20C - 760C. Specifications Power Source 9V battery (included). Display 4000 Count Backlit LCD. Overload Protection CAT III and IV1,000V/600V. Fuses 0.5A and 10A - 1,000V. Insulation Class II, double moulded. IP Rating IP-67 water-resistant (1m). Polarity Indication Yes, automatic. Auto Power-Off Yes, after 15 minutes. AutoRanging Yes. Manual Ranging Yes. True RMS Yes.