One card function
: One card enables the control of electricity and water meters.
Display synchronization function
: The LCD display is synchronized with the mechanical display. Even if there is a circuit malfunction and the LCD cannot be displayed, it can refer to the mechanical display.
Reminder alarm function
: Battery undervoltage, insufficient available water, strong magnetic interference, and other fault information will prompt an alarm on the LCD.
Data upload function
: Every time a user buys water, they will bring relevant information back to the management system, allowing the management party to understand the user's water usage and table status.
