Shenzhen Sensor Electronic Technology Co., Ltd was founded in 1996. We are specializing in research, development, and manufacturing of electrical transducers. Our products are manufactured and certified to ISO 9001 (2000) . The transducers have been approved by UL, C-UL, CME and CE. The transducers can measuring DC current and voltage parameter, and also up to 15 AC parameters including current, voltage, active power, reactive power, power factor, frequency, active energy and reactive energy of 3-phase 3-wire, 3-phase 4-wire and single phase circuit. Our products have two kinds of output: Analog output and digital output. The most popular are Hall Effect current transducer, True RMS transducer, self-powered transducer, multi-parameter digital transducer and so on.