Product advantages: [with Infrared Thermometer]: Voltage tester integrated infrared thermometer greatly enhance the test experience, ideal for HVAC applications, automotive, grill, etc.[Integrated Multimeter]: Voltage detector integrated multimeter design not only greatly expands the testing applications, but also let you not worry the multimeter consume too much space.[VFC Function]: VFC function can measure the output voltage of inverters.[Green & Red Backalight]: Green and red backlight display make it very easy to judge the detected voltage strength.[Manual & Auto Mode]: Not only suitable for traditional manual switching operation, but also suitable for beginners' no-switching operation. Features: Auto and manual mode.Green and red backlight design.Voltage tester, multimeter and infrared thermometer design.AC/DC voltage, resistance, frequency and continuity test.VFC test, V-Alert test and live wire check testAuto power off and low battery indication.