Product Description Product Features 3-in-1 Functionality: Acts as a data logger, multimeter, and temperature meter. Multi-Device Connection: Supported via mobile app for seamless connectivity. Trend Analysis: Offers a special chart mode for change trend analysis. Voice Warning: Ensures measurement safety with built-in voice alerts. Smart Voice Reading: Provides accessible voice reading functionality. 4(1/2)-Digit Display: Enhanced precision for measurements. Smart Power-Off: Extends battery life with intelligent power-off options. Bluetooth 4.0 Connectivity: Compatible with Android 4.3 or iOS 7.0 and above. Offline Recording: Available in models with a "+" for recording without connectivity. True RMS Calculation: Accurate measurement of RMS values. Specifications Auto-Scale: Yes Max/Min Value: Yes Offline Recording Model: B41T Bluetooth Module: Yes Record Period: 168 hours (7 days) Record Length: 10,000 points True RMS: Yes LCD Backlight: Yes Diode Test: Yes Simulated Chart: Yes Audion Test: Yes Data Hold: Yes Input Protection: Yes Auto Test: Yes Low-Battery Indicator: Yes Input Impedance: 10MΩ On-Off Warning: LCD Relative Measurement: Yes Size: 69mm x 52mm Battery: 3V (1.5V x 2) AA (not included) Dimension (WxHxD): 85mm x 185mm x 30mm Device Weight: 0.32 kg Package Includes 1 x B41T+ Digital Multimeter 1 x Probe 1 x K-Type Thermocouple 1 x Alligator Clip 1 x Multi-Function Test Socket 1 x English Manual 1 x Soft Case