Mastech MS2203 Clamp Meter, Power, 3-Phase, 4 Digits LCD Ac voltage (v): 0.1V 600V, ac current (a): 0.1A 1000A, active power (kw): 0.01Kw 600Kw apparent power (kva): 0.01Kva 600Kva, reactive power (dvar): 0.01Kvar 600Kvar, Power factor (pf): 0.3 1, active energy (kwh): 0.001Kwh 10000Kwh, frequency (hz): 20Hz 1000Hz display 9999 counts, jaw opening 50mm/2.0 inch Power supply: 4 x 1.5V aaa batteries, product size: 300 mm x 103 mm x 51 mm / 11.8" x 4.1" x 2.0"