WIDE APPLICATIONS - The AstroAI M4K0R Multimeter accurately measures AC/DC voltage to 600V, Current to 10A, Resistance to 40MΩ. You can use it for continuity test, diode test, battery test and live wire test. Includes 1.5V, 9V and 12V battery test modes to easily test a wide variety of batteries. Multimeter light turns red for low voltage and green for enough voltage.NON-CONTACT - Fully safe non-contact voltage testing with sound and light alarms. You can detects AC voltage without the use of test leads. Uses NCV function：When the Meter senses a strong AC signal, the red indicator light will turn on and the buzzer will emit a quick beep.THOUGHTFUL DESIGN - Support Data Hold, Max, Auto Shut-off, low battery indicator and continuity buzzer. Includes Convenient features like Audial and Visual Alarm, LCD Backlit Screen and Flashlight make it easy to use. Two 1.5V AAA batteries are included in the package.ENSURES SAFETY - Double ceramic fuse is anti-burn and protects from overloading. The multimeter has passed overvoltage category III 600V safety standards. The silicone cover is able to protect the multimeter from failing damage and prevent electric shocks.ADDITIONAL TIPS - This Multimeter is designed to troubleshoot a variety of automotive and household electrical problems safely and accurately. It’s a suitable tool if you want to do some household or commercial improvements whether DIYers or Hobbyists. Combined with Amazon's excellent delivery, we provide lifetime technical support. Product Description “For All of Life’s Adventures” is more than a slogan for us; it’s a lifestyle and core philosophy. AstroAI supports the adventurer within and we encourage our customers to take risks and push the envelope. We don’t choose products based on market interests or fancy analytics. We develop tools and products for ourselves and our customers based on real-world needs and expectations. AstroAI 4000 Counts TRMS Digital Multimeter The AstroAI Multimeter is perfect for diagnosing automotive and household AC/DC current, voltage and resistance problems. It also makes it easy to measure battery voltage at 1.5V, 9V and 12V. Powered by two AAA batteries the AstroAI Multimeter is an essential piece of equipment. AC/DC Voltage/ Resistance/ Diode/ Continuity 1.5V/9V/12V Battery Voltage Test Non-contact voltage detection Backlight Display/ Flashlight Overload Protection/ Data Hold DETECTS LIVE WIRES The AstroAI Multimeter’s unique function alerts you to live wires with a red indicator light and audio alarm. NON-CONTACT VOLTAGE DETECTION (NCV) Place probe close to electric sockets, outlets and terminals to test voltage and live wires safely. CONTINUITY TESTING Connect test leads to the circuit, if it’s connected a buzzer will sound and the value will be displayed on the LCD screen. DATA HOLD If you want to record the measurement value, just press the 'Hold' button, then the reading showed on the screen will be locked. STRONG BACKLIGHT AND FLASHLIGHT The flashlight acts a torch and the backlight perfectly illuminates the LCD screen so you can work perfectly in the dark. LOW BATTERY INDICATOR Check the battery meter to see how much power’s left. Takes two AAA batteries. AUTOMATIC CLOSE DOWN Your device will close down after 15 minutes of no-use to save power. Switch the rotary dial to re-start. ANTI-BURN DUAL FUSE PROTECTION Enjoy anti-burn protection and high safety measures with the double ceramic fuse and protection circuit. Maximum Display 4000 Counts 2000 Counts 2000 Counts 4000 Counts 6000 Counts 10000 Counts AC/DC Voltage AC/DC Current Only AC Current Frequency X X Capacitance Live Wire Test X Temperature X X X X Auto power off NCV Detection X The AstroAI True RMS Multimeter is designed to be safely and accurately used by professionals in a commercial setting or weekend DIYer's that need a little more power utility from their standard digital multimeter. It's easy and safe to operate with advanced features built for measuring seemingly everything. Run tests on diodes and transistors while being able to measure voltage, current, resistance, continuity, capacitance, all on one device. This multimeter is designed to be used in commercial settings, but can also be brought home to use with automotive or household electrical problems. Specifications Digital Display: 3 ¾, 3999 Sampling Speed: 3 times per second LCD Size: 55 x 31mm Range Selection: Auto or Manual Polarity Indication Overload Indication Low Battery Indication Operating Environment: 32°F~104°F (0°C~40°C);