9178J prepaid meter parameters Features:? A table and a card. ? LCD function, intuitive and easy to read. ? Fully enclosed waterproof design, more stability and more durability. ? Control circuit, electric valves, flow meters one design. ? Real-time deductions, no fee without water. ? Battery voltage warning function. ? Undervoltage, automatic shut off valve. ? Abnormal interference automatically close the valve function: In case of external magnetic interference, automatically close the valve. ? Abnormality protection: state of water, an exception occurs, exit the water meter status, stop deductions, to protect the interests of users. Model 9178J prepaid billing a table and a card support IC card type contactless IC card (4442) Display LCD (liquid crystal) Operating voltage 3.6V lithium battery built (no external power supply) Operating current <15uA using standard SJ / T11166 --1998 ambient temperature 0 ℃ ~ 50 ℃ Relative humidity <95% of the maximum allowable working pressure 1MPA response time <13S maximum reading 99999.9 m3 Minimum reading 0.1 m3 Dimensions (MM) 15 Diameter: 165 x 85 x 115 20-caliber: 195 x 85 x 115