The fieldpiece sc680 is a top of the line trms wireless power clamp meter packed with all the essential features service technician need to install, service, and troubleshoot any hvacr system the wireless meter also includes direct integration with the job link system app. the sc680 clamp meter is ideal for obtaining electrical measurements on mini splits and includes molex tips for hard-to-read circuitry. the low pass filter removes noise to get true voltage readings on variable frequency drives (vfds) as well as tests three-phase power lines with two leads, and maintains wireless connection directly to a mobile device at 115 feet. the clamp meter has a safety rating of cat iv at 600 v and cat iii for 1000v.