Features: 1, the use of elastic soft seal ball valve body, the ability of the media by; 2, use RF card, IC card and resistance to physical attacks and decryption attack ability; 3 selectable time charges or heat the fee system easy application; 4, protection class IP67, to ensure that even after a short period of time in the water immersion normal use;, all-metal gear, large twist operated gearmotors, plastic gear reducer drive motor compared with high mechanical strength, dimensional accuracy high, high precision equipment, stable performance, high temperature, anti-aging, etc.; 6, imports of industrial-grade lithium-ion battery, the shortest time for more than 5 years (from date of shipment of the date). Functions: 1. Opening degree adjustment function: the smart valve opening any degree (0-100%) can be set using the card, this feature can facilitate the realization of the balanced distribution of traffic between the floors or user, to reach thermal equilibrium the purpose of regulation; burglar self-locking function: When users open the smart card lock control valve detachable components (such as the battery box protective cover), this function will start, which is smart valve closes automatically and the user card fails, Management Card of the smart valve reset the smart valve, the user card in order to continue to be valid; 3 automatic voltage detection function: When the battery reaches a critical power, smart valve will automatically shut down buzzer alarm at the same time (or two) to remind the user to replace the battery. 4 operating information Anti-read function: the smart valve at run-time operational status and operating parameters can be read by the user card and read by the user card and anti-read by the management system, facilitate the management of remote for smart valve operation; factory unique serial number to install and use the free copying function: each product has a unique serial number at the factory to ensure the safe use of the product, operation after the installation is complete, you can have two ways the serial number simple, fast transfer to a management system to operate, exempt staff scribe to bring the error and inconvenience. Technical parameters: Connection Type the threaded connection nominal diameter DN20./DN25./DN32 main material chrome (polished) copper valve body, reinforced nylon alloy body protective cover material hard plastic protective cover (ABS) Degree of protection IP67 rated pressure 2.5MPa _40 ° C -60 ° C storage temperature of the aqueous medium temperature of 1-95 ° C ambient temperature 20-50 ° C Voltage 3V Static current the 5μA dynamic current 300mA lithium battery imports battery life of 5 years or more output Distort> 2 Nm opening degree adjustment 0 - 100% open angle gear drive motor protective metal, all-metal gears, torque