Features1Contactless Power Measurement: This pen multimeter with NCV non contact induction, built in sensor, when the detection of nearby AC voltage, the red light indicator flashes, the closer to the power supply to report the indicator flashes more sharply. 2Long Lasting Endurance: This pen multimeter using two AAA battery(not included), which is easy to replace and easy to buy, with a longer and more durable life. 3Multifunctional: This pen multimeter measures a variety of electronic components to meet your needs for versatility, such as AC voltage measurement, DC voltage measurement, buzzer measurement, resistance measurement, NCV voltage sensing. 4Determining Neutral And Live Wires: This pen multimeter in LIVE mode insert the meter head into the hole to determine the neutral line and live line. The live line shows H accompanied by a beeping sound, while the neutral line does not respond. 5Self Lighting: This pen multimeter has a light at the tip of the pen, in the dark environment at night it can assist in lighting, you no longer fear that you can not see the measurement position, to eliminate the risk of electric shock.SpecificationItem Type: Multimeter PenMaterial: ABS, MetalBatteries: AAA Battery x 2 ( Shipped Without Battery ) AC Voltage: 0.8V-600VDC Voltage: 0. 8V-600VResistance: 0.1-40Package List1 x Multimeter1 x TestPen1 x Manual