Features:  3-in-1 Multifunctional Meter -- BT multimeter, temperature meter, offline recorder. Equipped with 2 measuring pens, 2 crocodile clips and a K-type thermocouple, easy to install and use. The multimeter can be widely used in electrical testing, automotive repairing, industrial temperature measuring, etc.  BT Function & Offline Record -- It supports BT function in smartphone APP and PC software, and is compatible with Android 4.3 and above/ iOS 7.0 and above/ Wins. Offline record function allows you to record for a long time without staff on duty, while reducing BT consumption to conserve the battery power of the multimeter. And multiple groups of data can be recorded at the same time.  Auto Ranging/ Manual Selection -- High accuracy, wide measuring range, True RMS, 22000 counts, auto recognition or manual selection of the range for more convenient use. It can test AC voltage, DC voltage, AC current, DC current, resistance, diode, frequency, continuity and temperature. And it can capture maximum and minimum values.  Temperature Measurement -- Comes with a K-type thermocouple, this smart meter features -50~400℃ (-58~752℉) wide measuring range for industrial temperature measuring, which has quick response and brings accurate data.  Backlight LCD Screen & Alarm Buzzer -- Data hold function and clear LCD screen with backlight greatly enhances the reading experience and makes it easy to read. With alarm buzzer for warning in different sistuations, such as before auto power off, in exceeding the measuring range, before the BT function turing off, etc.  Battery Operated & Portable to Carry -- Powered by 2 AA batteries (not included), auto power off in about 30 minutes to save power. Ergonomic design perfectly fits your palm; foldable bracket for easily put in the desktop. Comes with zipper storage bag, portable and lightweight, easy to carry.    Note:  1. Please read the user manual carefully before use.  2. Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding.    Specifications:  Color: Blue & Black  Material: ABS  Screen: Digital LCD Screen with Backlight  True RMS: Yes  Counts: 22000  Max. Voltage: 1000V DC, 750V AC  Max. Current: 20A DC or AC  Capacitance: Not Support  Max. Resistance: 220MΩ  Max. Frequency: ＞220MHz  Temperature Measuring Range: -50~400℃/ -58~752℉  Auto Shutdown: about 30min  BT Version: Support 4.0  OS: Compatible with Android 4.3 and above/ iOS 7.0 and above  Power Supply: 2 * 1.5V AA Battery (NOT included)  Operating Height: Max. 3000m  Operating Environment: 0~40℃  Storage Environment: -10~60℃  Humidity: ≤80%RH  Item Size: Approx. 185 * 85 * 35mm / 7.28 * 3.35 * 1.38in  Item Weight: Approx. 293g / 10.34oz  Storage Bag Size: Approx. 19.5 * 12 * 5cm / 7.68 * 4.72 * 1.97in  Package Size: Approx. 21 * 13.5 * 5.5cm / 8.27 * 5.31 * 2.17in  Package Weight: Approx. 572g / 1.