Meco is the manufacturer and exporter of Digital Power Factor Meter [with Built-In Transducer] with the model numbers DPF11, DPF31, DPF9611, DPF9631, DPF9633-TRMS, DPF9634-TRMS, DPF14411, DPF14431, DPF72x14411, DPF14431. Meco is an ISO 9001:2000 certified company. The features of the Digital Power Factor Meter [with Built-In Transducer] are as follows: Bezel Size: 48x96mm,96x96mm,144X144mm,72x144mm Digits / Counts [max.]: 4, 1999 Digit Height: 0.56" / 14.2mm, 1" / 25.4mm Ranges [AC] V : 63.5/ 110/ 230/ 440V AC and Through PT for Higher Voltages AC A : 1, 2, 5A AC and Through CT/ 1A or 5A for Higher Currents Hz : 50Hz [V Range ± 20% of Nominal; A Range = 20 - 120% of Nominal] System: 1/3 Phase, 1/2 Element, 2/3/4 Wire Auxiliary Supply Standard : Self Powered AC Aux. : 110 / 230V AC DC Aux. : 12/24/48/110/220V DC Accuracy: +/- 1 Degree Electrical