With the rapid development of electric meter manufacturing, raw plant manufacturers to develop new products, with a low cost implementation of single-phase multifunction gas multi-purpose card watt-hour meter in advance. Effective, convenient and management of users' utility. This product adopts the M1 card electricity meter information management, automatic correction watt-hour meter by RS485 interface software commands, improve production efficiency and reduce labor costs. Through my company. DH6200V3 intelligent remote meter reading system, which can realize real-time monitoring, automatic statistics hours (date) (month) (year) data, such as automatic SMS alarm, line loss statistics, and other functions.