How is the price difference 175.2 in Beijing calculated? Mine is a pre-stored smart card table.

In fact, the property adopts Gisher's prepaid remote meter reading system, which is the ladder electricity price mode set by the prepaid system. The rate of each stage is set according to the Beijing standard step electricity price. When the electricity consumption reaches a certain step, it will be charged according to the step minus the pre-stored value. Electricity meters generally only measure and store the data of users' electricity consumption, and the control and setting end is in the main control system of the property, that is, Jishe intelligent meter reading system. This is how it charges.