Pre-paid water meter

Main function:

Cryptographic Function: Automatically identify the password of the RF Card; Prepaid Function: Pay at first; 

Notification Function: the remind volume less than the setting volume, LCD show the alarm code; 

Cut-off Function: the remind volume is "o", the valve cut-off; 

Power off protection Function: the power is less than 3V, the valve closed, and all the date automatically saving; 

Magnetic Protection Function: Valve automatically closed with outside stronger magnet interference, with magnet removing, valve open again; Date Setting: through the TM Card can set the "overdraft"; 

Easy to change the Battery.