Toptronic 1000A 3 Phase Power (True RMS) Clamp Meter · Jaw size 45mm · Total power factor · Thd%-F (Total harmonic distortion) · Peak hold · Rs232 · 3 Phase unbalanced load · Back light · Battery included · Test leads included · Pouch included Model Specification: · Dimensions (mm): 224(L) x 78(W) x 40(H) · Weight: 224g · Power source: 2x 1.5V AAA Batteries