The Greenlee DM-200A, DM-210A, and DM-510A Digital Multimeters are hand-held testing devices with the following measurement capabilities: AC and DC voltage, AC and DC current, frequency, and resistance. They also check diodes and verify continuity. An optional optically isolated computer interface with software facilitates the recording of readings from the meter to a computer. Other specialized capabilities and functions common to all meters include: Backlighted LCD for reading in dim conditions. Beep-Jack audible warning alerts the user with a beep and an error message on the LCD if the test lead is plugged into the mA/ A or A input terminal while the selector switch is not in the mA/ A or A position. Non-contact and single-probe voltage detection capability. Bar graph display, which responds more quickly than the numeric display - useful for detecting faulty contacts, potentiometer clicks, and signal spikes. Relative zero mode. Data hold mode. Selectable automatic power off Includes Digital Multimeter (2)1.5V AAA batteries Test leads Bead temperature probe Protective boot Certificate of Calibration Features Measures voltage, current, resistance and frequency Tests continuity and diodes Backlit LCD with 6,000 count display Two voltage detection modes - non-contact or using a single test lead BeepJack warns when test leads are incorrectly inserted in current measurement terminals Automatic and manual rangeselection Relative offset mode to see changes in measurements Data hold Use optional USB / RS-232 interface DMSC-2U for direct-to-PC logging Lifetime Limited Warranty Accessories included: (2)1.5V AAA batteries, bead temperature probe (DM-210A, DM-510A only, 400 F/204 C max), test leads, protective boot Measures capacitance Measures temperature using a type K thermocouple Includes Certificate of CalibrationGreenlee