The A1 Intelligent Digital Live Wire Tester is a durable and innovative multi-functional tool that can check live wires, test AC/DC current and voltage, resistance, continuity, diodes and more. With an NCV inductive probe, LED light, and easy-to-use features like data hold, automatic shut-off, and continuity buzzer, it is perfect for electricians, homeowners, and industrial electrical problems. Compact and portable with a non-contact design, it includes an English manual and runs on 2 AAA batteries. Features 1. Live Wire Check: The live wire detector can automatically detect the live or neutral wire. Insert red test probe into the socket jack, if the screen will display LIVE, the 110V signal indicator or the 220V signal indicator lights up, and the buzzer sounds an alarm indicating that the line is a live wire. Handy circuit tester for electricians, homeowners. 2. Non-Contact: With NCV inductive probe for AC voltage; Just place the tip near a terminal strip, outlet, or supply cord. When the tip glows red and the pen beeps, you know there's voltage present. 3. With LED Light: Support Data Hold, low battery indicator Auto Shut-off and continuity buzzer. LED Display makes it easy to use in dimly light areas. 4. Small But Multi-Function: This multimeter can test AC DC current, AC/ DC Voltage, Resistance, continuity, diode measurement, suitable for electrician test, household use, automotive, industrial electrical problems. 5. Easy to Operate: A1 fully automatic anti-scalding intelligent digital multimeter, easy to operate, easily check out circuit faults and troubleshoot wiring. Power on direct measurement of AC and DC voltage resistance and on/off without changing gears. The tip of the head automatically senses the zero and fire wires. Specification Material: ABS Color: Red Package Size: 13 4 2 cm Weight: 150 g Battery: 2 x 1.5V AAA Battery Package Include: 1x Digital Multimeter 1x English Manual