Digital Multimeter
DM500MAX - Power Probe Group, Inc. (Power Probe, Inc.)
The DM500MAX is designed for harsh environments with a watertight gasket as the seams rotary switch, an input terminal, and battery cover to keep out dust, dirt, and splashing. They can also take shocks and drops, work anywhere from indoor to outdoor, and special designed LoZ(Low Impedance) feature to prevent false reading caused by ghost voltages.