In the long-term residential water supply work, the management department is often distressed because it cannot receive the water fee smoothly, and encounters obstacles in reading the water meter data of the residents. This has taken a lot of time and energy for the management department, and this LXSG prepaid water meter can effectively solve these problems. The user must first pay for the recharge before the valve of the water meter can be opened and supply water. When there is not enough money in the water meter, it will stop the water supply.