OW18E multimeter can perform various tests, including DC/AC voltage, AC/DC current, resistance, capacitance, frequency, NCV, diode and temperature (/). It is worth noting that it has the 4.0 wireless transmission function, which can be connected to a mobile phone or a PC to display data in the form of graphs, allowing you to analyze the data. Widely used in electronic circuit debugging, circuit testing design and manufacturing, education and training, automobile maintenance and testing, etc. Features: True RMS multimeter-can test DC/AC voltage, AC/DC current, resistance, capacitance, frequency, NCV, diode and temperature (/). backlit LCD with flashlight-4 1/2 digits are displayed on the backlit LCD, which is easy to read; equipped with a flashlight, it is convenient to work in dark . 4.0 wireless transmission-with 4.0 characteristics, fast and stable, can be connected with mobile phones or PCs, and supports Android, iOS and Windows systems at the same time. Data logging-data can be collected and stored, and displayed in chart form for quick analysis. It also supports offline data storage for later inspection. Model: OW18E True RMS Yes Diode Test Yes Auto Power-off Yes On-off Warning Yes Low-battery Indicator Yes Data Hold Yes Relative Measurement Yes Flashlight Yes Auto Ranging Yes LCD Backlight Yes Automatic-manual Range Selection Yes Input Protection Yes version: 4.0 Battery type: 9V battery (6F22) (not included) Safety standard: -600V; -1000V Product size: 196 x 88.5 x 56mm Color: Blue & Black Material: plastic Package Contents: 1 x multimeter 2 x test lead 1 x thermocouple 1 x alligator clip 1 x manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.