UNI-T UT223A Large Diameter Clamp Ammeter Meter Current Measurement Data Storage RS-232 LCD Backlight Overload Protection UT223A Large diameter clamp ammeters is well designed and manufactured for measuring AC leakage current, current, voltage, adopt the latest CT technology and digital integrated technology. Its large caliber 108mm×148mm can clamp electric.       Specification    Range        Best Accuracy        Model            UT223A        Current  (A)       Range    0.0A~499A    ±(2%+5)        500A~999A    ±(3%+5)        1000A~2999A      ±(4%+5)        3000A~4000A    ±(5%+5)        Resolution    0.1A        Test Range     AC 0.A~4000A    √         Special Functions        Display Mode    Four Digits LCD Display    √        Clapm Size    108mm×148mm (can clamp electric cable of 108mm diameter, or 160mm×4mm flat cable and steel earth wires)    √        Auto Range        √        RS-232        √        Data Storage        99Groups        LCD Backlight        √        Date Hold        √        Overload Protection    OL    √        Auto Power Off    5Minutes    √        Low Battery Indication    ≤5.2V    √        Test Model                             Clamp CT, integral mode    √        General Characteristics        Power Supply    6V DC(LR6×4 alkaline dry batteries not included package)        LCD Size    47mm×28.5mm        Product Color    Red + Grey        Product Weight    1.