For predictive maintenance of electrical and mechanical systems, HeatSeeker incorporates Auto Hot/Cold Tracker, which indicates hottest and coldest temperature within single screen, identifying current or potential problems. Once image is captured, technicians move toggles to navigate tracking cursors across LCD screen to measure surface temperature ranging from 14 to 660°F. Full 1,849 temperature measurements can be viewed live on LCD with accuracy of ±2% or ±4°F.