For use on 12V to 42V systems including Hybrid and General Service Applications. Low 3 Milliamp draw at 12V. Automatically identify system voltage using internal LED lights, Blue for 12V & Red for 42V systems. Two LED lights illuminate the work area. Extra Long 12' coiled cord, 3 1/2" Probe, 7 1/4" Overall Length. 12' coiled cord remains flexible even at low temperatures.