La description

pole earth resistance measurement with super slim jaw

    Earth resistance measurement for multi-grounded systems
    Measure leak current with absolute certainty with highly sensitive 0.*1 mA resolution (at *0.*0 mA range)
    Measure load current up to *0.0 A range
    Clamp at the narrowest point
    Data transfer to Android™ phones using Bluetooth® wireless technology
    Real time data transfer, automatic report generation on Android™ phone

Note) The application supports Android™ OS 2.1 or later, but proper operation is not guaranteed on all Android™ handsets. For more information about the devices on which proper operation has been confirmed, see below. Please download and install the “FT***1 Communication Software” from the Google Play™ store in order to use the wireless connection function with an Android™ phone. The software is free, but the user is responsible for any Internet connection costs incurred in the course of downloading or using the application. Bluetooth® is a trademark of Bluetooth SIG, Inc. and licensed for use by HIOKI E.E. CORPORATION.