The "Haosheng" brand DDSY1332 electronic prepaid one-way energy meter uses microelectronics technology to measure electrical energy. The meter, which complies with GB/T17215-2002 and GB18460-2001 standards, adopts a fully shielded and sealed structure, and uses an advanced microcontroller processing system for data acquisition, processing, and storage. It has good anti electromagnetic interference, ultra-low energy consumption, high precision, anti-theft, high overload, and long life characteristics. The use of computer management and the management mode of purchasing electricity before using it greatly improves the work efficiency of the power management department, saves personnel expenses, and facilitates management. Within the rated current range, the maximum operating power can be limited (limited by the power supply department), with one meter and one card, dedicated for card conversion, and used for card replacement without power loss; Electric cards can transmit data bidirectionally; Can automatically power off and warn users when purchasing; When the battery level is zero, the power will automatically trip and cut off; And it has certain anti-theft software design, etc.