STS standard compliant

 Directive 2014/32/EU, OMIL R-49 compliant

 Ratio “R”  Q3/Q1=R160（Up to 400)

 Perfectly water proof IP54

 Prepaid and post-paid hybrid

 Pre-programmable low credit warning

 Automated meter reading and Valve controlling

 Over 5 years’ data storage in absence of power

Reading through RF-LORA, NB-IOT

 Non-return valve preventing back-flow