This flexible Clamp meter is a portable handheld professional detector that measures AC current and frequency. Suitable for electrical equipment testing and maintenance. Featur es : Flexible clam p , convenient to use. It can identify the measured signals and display the result automatically. LCD display with backlight and flashlight, easy to operate and read. Data hold fu nction , low battery indication, auto power off. Perfect for electrical de vices testing and maintaining. Technica l Ind ex Rang e Accu racy PM2019A (Optional) PM201 9S ( Optio na l ) AC Current 30A or 300A or 3000A (3.0 percent and5) (3.0 percent and5) DC Voltage 6V or 60V or 600V (1.0 percent and3) AC Voltage 6V or 60V or 600V (1.2 percent and3) Resistance 6kΩ or 60kΩ or 600kΩ or 6MΩ (1.0 percent and3) Frequency 40Hz-1kHz (1.0 percent and2) 20Hz-1kHz (1.0 percent and2) Specification Optional Model PM2019A PM2019S Brand PEAKMETER Display 6000 counts 6000 counts Data Hold Yes Yes Lighting Yes Yes Blacklight Yes Yes True RMS NO Yes Battery 3pcs x 1.5 V AAA Battery ( NOT included ) Clamp Diameter 75mm or 3inch Size (Approx.) 16.5 x 11.3 x 2.5cm or 6.5 x 4.4 x 1inch (as picture ) Weight (Approx.) 340g or 12oz 422g or 14.9oz Op tional Model Pac kage List PM2019A 1 x Flexible Clamp Meter 1 x User Manual PM2019S 1 x Flexible Clamp Meter 1 x User Manual 2 x Test Probe Note: Only things package included, no other stuff.