IoT Water Meter (Non-valve-controlled)

1. Has anti-external electric and magnetic attack function. When the sampling is attacked by external electricity or magnetism, the meter can automatically close the valve.
2. Has remote valve control function, which can realize prepaid and postpaid functions.
3. Has switch position detection function. When the normally open contact is in place and closed, the meter switch valve is in place, and the valve operation can be stopped immediately.
4. Automatically judges whether the valve limit switc