Ningbo Samsung Electric Co., Ltd. in June 15, 2011 in Shanghai Stock Exchange, the stock short: Samsung Electric, stock code: 601 567. Cheung Chi-Electronic Technology Co., Ltd. was established in 2013, the main smart meters, multi-function meter, high and low voltage electrical, etc; to high-quality products and services in the development of electricity, water industry, and is committed to becoming a power, water related products integrated solutions provider, has now established a sales network in Hunan Province and classification agents; around the same time as the Trinity staff quarters hydropower solutions provider, in conjunction Guanxi, Hanson base hydropower solutions provider, ambitious can hydropower projects under construction collection services supporting businesses, through the efforts of all staff received more recognition of the strength of the enterprise; at the same time help the provincial government, the High Court, the Provincial Environmental Protection Bureau, the Provincial Energy Office and other government agencies to establish a logistics management solutions for water, electricity, and provide complementary products; and the province of high and low voltage plant has established long-term relationship; based in Hunan, integrity, customer demand, to achieve customer value as the reference point of our work, the sense of providing our customers with quality honest services. DSZ188, DTZ188 three-phase smart meter smart meter main features of the three-phase high-performance metering chip, to achieve high precision measurement of small currents, temperature, frequency variation small advantage, with stable performance, feature-rich, anti-interference ability features a fully sealed structure and shell, to meet the harsh environment of high and low temperature heat applications. Battery box and seals can be separately programmed buttons, easy to manage the electricity sector. DSZ188, DTZ188 three-phase smart meter main features wide viewing angle, large-screen LCD, with rich characters auxiliary status indication and prompt information; Dual RS-485, far infrared communication interface, independent of each other. Hourly metering active power forward, reverse active power, reactive power quadrant support combined active and reactive power any combination of four quadrants; measurement phase of the forward active, reverse active and reactive power quadrant; sharing metering positive active, reverse active and reactive quadrant maximum demand and time of occurrence; can store up to 13-month history of energy and demand records consumption data to support up to three times a month settlement; maximum 8 rates, standby two sets the rate schedule, clock dual backup auto-correction; double backup data storage, automatic parameter correction; 6 types of data can be set to record the load curve, the storage capacity of 2M bytes; comprehensive event record type, with anti * electric open cover detection; recorded and stored voltage quality statistical data for 13 months; rich self-test, error correction, and alarm functions; after a power outage by buttons, handwritten wake display, far infrared meter; 10 password protection, many times wrong password lock communications, support single-level password lockout; AC / DC Adaptive auxiliary power supply, priority after power is supplied by an auxiliary power source; recording multiple freeze data, formed from the event log, load profile and the composition of the freeze data Abnormal graphical analysis of electricity.