Easy-to-use Voltage Tester is designed with 7-range LED indicators that quickly shows the range of the AC and DC Voltage measured. The meter vibrates when Voltage is detected >85V. Its built-in Non-Contact Voltage Detector function easily detects live voltages from 90 to 1000V AC. The AC frequency bandwidth is from 45 to 66Hz. Functions include Continuity with audible and visual alert. Designed with a bright built-in flashlight and a rugged double molded housing with integrated test leads.