Designed to be rugged, the FLIR CM78 clamp meter delivers safety and versatilitywithout sacrificing high performance or innovation for tomorrows challenges. Take the CM78 on every job as it delivers with advanced meter functions including True RMS accuracy, AC/DC current and voltage measurement, resistance, capacitance, frequency, infrared and contact thermocouple temperature, diode-test, and continuity check. The 4-digit, 4,000 count display is LED-illuminated making it bright and easy to read anywhere. Several one-button functions including data hold, min/max, and selectable auto- or manual-ranging. A relative function helps you zero out the meter. The large 1.7 inch (42mm) jaw opening handles conductors up to 1500 MCM. The FLIR CM78 amp clamp has a CAT IV-600V, CAT III-1000V overvoltage safety rating. NIST certification is available for this product. The product comes with Clamp meter, CAT IV silicon test leads, 6 AAA batteries, and user manual/CD.