39、Many of your Shanghai Huatong meters don't closed the valve, but the valve returns to normal after removing the battery for a period of time, and the valve can be opened and closed normally. What is the reason for this?
时间：2019-12-25 01:29:24热度： 分享到：
Smart meter contains electronic components,if the enviroment is humid,will lead to abnormal circuit board work.
