The meter is a hand held 3 1/2 digital multi-meter for measuring DC and AC voltage, DC and AC current, Resistance, Diode, Transistor and Continuity Test with battery operated. For special models also can be used for testing freguency, temperature, capacitance and NCV. Accuracy is specified for a period of one year after calibration and at 18 to 28(64 to 82)with relative humidity to 80%. Features: Multifunctional Multimeter - High precision with data keeping function. Portable digital multimeter with multiple functions. Overload Protection - Use protection circuit for resistance and frequency measurement. Designed to be a practical tool,safely troubleshoot a variety of electrical tests. Backlight Display - Maximum display,19999 counts. Optional backlit LCD with large digits for visibility even in dimly lit areas. Data hold function keeps measurements while record. Features Plus - For special models also can be used for testing frequency,temperature,capacitance and NCV. Widespread Use - Auto ranging measurement. Accurately measures such as AC/DC voltage and current,resistance,continuity,diode,capacitance,frequency/duty cycle,temperature,transistor and continuity test with battery operated. Specifications: Material: ABS Color: Red / Blue / Orange (optional) Maximum voltage between terminals and earth ground: 600V DC or 600V AC Fuse protection: F 250Ma/250V Self-restoring fuse Power: 9V battery, NEDA 1604 or 6F22 Display: LCD, 1999 counts, updates 2-3 times per second Measuring method: Dual-slope integration A/D converter Over range Indication: Only figure 1 on the display Poladty indication: -display for negative polarity Operating Environment: 0 to 40 Storage temperature: -10 to 50 Low battery indication: appears on the display DC VOLTAGE: Overload Protection: 250V rms for 200mV range, and 600V DC or rms AC for other ranges. AC VOLTAGE: Overload Protection: 600V DC or AC rms DC CURRENT: Overload Protection: 250V DC or AC rms for all ranges. Overload Protection: F250Ma/250V fuse. (10A range unfused) AC CURRENT: Overload Protection: 250V DC or AC rms for all ranges. Overload Protection: F250Ma/250V fuse. (10A range unfused) RESISTANCE: Maximum Open circuit Voltage: 3.2V Overload Protection: 250V DC or AC rms for all ranges. CAPACTITANCE: Overload Protection: 250V DC or AC rms for all ranges. Overload Protection: F250Ma/250V fuse. Item Size: 130.3*67.6*31.4mm / 1.26*2.48*5.12" Item Weight: 81g / 2.86oz Package Weight: 153g / 5.40oz Package Size: 135*100*38mm / 5.31*3.93*1.50" Package List: 1 * Digital Multimeter 2 * Test Line 1 * Instruction Manual