The CLAMP-GUN™ M12™ Cordless Clamp Meter Kit for HVAC/R (NIST) is a heavy duty True-RMS current tester for professional HVAC/R commercial and industrial applications. Powered by the Milwaukee M12 LITHIUM-ION battery, the C12CME-21C features an ergonomic pistol grip design which greatly increases comfort and ease-of -use in overhead applications. The unit also provides a wide 1.30” jaw opening to easily handle wire bundles, a thin jaw profile for access to tight spaces, a large white on black display, embedded non-contact voltage detection and an embedded extra bright LED Floodlight. A NIST Certificate of Calibration with Data is also included, needed by many organizations as proof of calibration with the date when NIST Calibration was performed. The C12CME-21C is covered by the Milwaukee 5-Year Warranty.