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The SIMPSON ELECTRIC 12388 is an analog milliammeter multimeter designed for measuring voltage, current, and resistance in electrical systems. Rated for up to 1000 volts AC and 1000 volts DC, it handles DC current up to 500 milliamps and 10 amps, with a maximum resistance range of 20 megohms. The analog movement provides real-time needle deflection, making it well suited for diagnosing fluctuating signals and verifying circuit continuity. Licensed electricians, HVAC technicians, and industrial maintenance professionals use this instrument for panel diagnostics, motor circuit checks, and general field troubleshooting. It ships with an AC amp-clamp adapter, batteries, screw-on alligator clips, and test leads with threaded probe tips.
The 12388 is suited for residential, commercial, and light industrial electrical applications. Its broad measurement range covers common low-voltage control circuits, line-voltage equipment, and milliamp-level signal circuits found in HVAC controls, motor starters, and distribution panels. The included AC amp-clamp adapter extends its usefulness for non-contact current measurement without additional test equipment.
Designed as a general-purpose analog multimeter suitable for use across residential, commercial, and light industrial electrical circuits where voltage, current, and resistance measurements are required.
Installation and use of this instrument should be performed by a qualified electrician or trained technician familiar with NEC safety practices. Always de-energize and lock out circuits before connecting test leads to live panels or high-voltage equipment when possible. Verify that the selected measurement range on the meter matches the expected circuit values before making contact. Inspect test leads and probe tips for damage before each use.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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