* The product maintains advantages of household meter systems. * One meter with several cards and card consumption mode absolutely solve incorrect settlement of collective consumption and are in favor of economy. * Auto gas break-down function guarantees personal safety in case of long-time gas flow or gas leak. * Unique power supply technology ensures long-time operation stability of the system. * Simple calculation way settles system disorder. * Data recovery function guarantees in-time data recovery, thus to avoid relevant disputes incurred. Product Features * Scientific and rational part-separate design guarantees part insulation, seal and anti-corrosion performance. * Unique and precise sampling and transmitting system ensures metering preciseness and reliability. * Power break down work mode reduces power consumption and has a high reliability. * Rational power multi-pole management allows users have enough time to replace battery and avoids unaware gas cutting off. * Automatic valve shut-off technology stops gas flowing in case of power break down. * Load insulation technology substantially improves anti-jamming performance of the equipments. * Multiple surplus data test helps to prevent hacker attack and corrects the attacked