Single phase electronic prepaid energy meter (hereinafter referred to as electric meter) uses microelectronics technology to measure electrical energy, and is an electric meter that complies with GB/T17215-1998 and JB/T8382-1996 standards. It adopts a fully shielded and fully sealed structure and uses an advanced shrapnel processing system for data acquisition. Processing and storage have good resistance to electromagnetic interference, low self consumption and energy saving, high precision without meter calibration, anti electricity theft, high overload, and long lifespan.Main features: Applying computer management, purchasing electricity first and then using it, limiting the maximum power consumption within the rated current range (limited by the power supply department), one meter, one card, dedicated card, no power loss after card loss, and reusing after card replacement; Electric cards can transmit data bidirectionally; Can automatically power off and alert users to purchase electricity; When the battery level is zero, it automatically shuts off the power and has a certain anti-theft software design.