Features: Mulifunctional Digital Tester: it can measure AC/DC voltage, AC/DC current, resistance, capacitance, frequency, duty, temperature, diode and continuity, also has live wire detecting, NCV non-contact AC voltage detection. TN/VA(optional) LCD Display Technology: 3.1-inch LCD screen is clear and large enough to display all the data, analog bar, and indicate icons. (the TN screen has backlight ON/OFF function) Humanity Design: protected with silicone shell, the mini handheld multimeter is as small as a smart phone, which is convenient for one-handed operation, with data hold function to freeze the readings while taking measurement. Safety Operation: with anti-misinput indicator, intelligent anti-burn protection, also meet with EN61010-1 and CAT.III 600V safety grade to ensure the safe use. Auxiliary Illumination Flashlight: flashlight design lets you test efficiently and comfortably at the dim working environment. Auto Power-off & Low Battery Indication: use 4pcs 1.5V AAA batteries(not included) as the power source, the low battery indicator will remind you to replace batteries, once the battery voltage is too low. If there is no any key operation in about 15 minutes, the meter will auto-off to save battery energy. Wide Applications: with stable performance and high precision, the professional multi meter is suitable for testing and maintenance the electrical equipment. Specifications: Model: HT127A, TN Display / HT127B, VA Display (Optional) DC Voltage: 60mV/6V/60V/600V AC Voltage: 6V/60V/600V DC Current: 600mA/10A/6A AC Current: 600mA/10A/6A Resistance: 600/6k//60k/600k/6M/60M Capacitance: 6nF/60nF/600nF/6F/60F/600F/6mF/60mF Frequency: 6Hz/60Hz/600Hz/6kHz/60kHz/600kHz/6MHz/10Hz Duty: 1~99% Temperature: -40~1000 / -40~1832 Diode: 0~3V Continuity: