The Greenlee DM-25 Digital Multimeter is a hand-held testing device that has the following measurement capabilities: AC and DC voltage, and resistance. This meter will also check diodes, verify continuity, and test 1.5 V and 9 V batteries. Part of a great value is having exactly what you need in a tool, which the DM-25 does. Frequency, temperature, capacitance, battery test, duty cycle and analog bar graph are just some of the features available on these meters. All are designed for increasing efficiency on the job.