• Resolution down to 1mA AC and 10mA DC
• One touch Auto Zero for DC current measurements
• Measures frequency through the clamp jaws
• Min/Max function
• 0.9 inch (23mm) jaw opening

The compact Extech 380947-NIST is a 400 Amp True RMS mini clamp meter. This meter has a small diameter jaw designed to reach in small areas while providing 1mA resolution and very low-current sensitivity. This mini clamp meter is useful for current and frequency related troubleshooting in plant maintenance, electrical, HVAC, and telecom work, as well as home electrical, fleet maintenance, marine, and motorcycle repairs. Comes with battery and manual. Includes certificate traceable to NIST.