Electrical tester offers all the functionality that electricians look for in volt meters and voltage and continuity testersBacklit LCD display for easier viewingDisplay resolution of 0.1 V, ideal for troubleshooting low voltage lighting9.99 kOhm resistanceRotary field indication, GFCI trip, continuity beeperDisplay hold for easier viewing in hard to test areas3 forms of AC/DC voltage indication, light, sound and vibration for added user protection and convenienceDetect live voltage even when the batteries are deadExtra heavy duty, replaceable test leads for more flexibility and durabilityON/off switchable beeper, selectable according to your environment, bright LED flashlight for work in poorly lit areasCompliant with latest NFPA 70E recommendationsReplaceable test probes for added flexibility and convenience, convenient probe storage on the back, probe holder for easier testingHazardous voltage warning light for added user protectionTest lead strap included for better test lead managementSafer than traditional solenoid testers and fully compliant with NFPA 70EAuto-OFF saves battery power 40 hr battery, duty cycle for voltages up to 240 VAC, LEDs turn on at voltages > 30 VAC/VDC +/-35%, 12, 24, 48, 120, 208, 240, 277, 480, 600 VAC LED voltage indication levels, except for the 12 V LED which turns on between 50% and 100%+/-(3% Reading + 2 Digits) for AC voltage, +/-(2% Reading + 2 Digits) for DC voltage, +/-(5% Reading + 3 Digits) for resistance LCD accuracy0.1 VAC for voltages 40 hr battery life-10 to 55 deg C operating temperature