设置高频、中频、低频用哪个AT指令设置？

Hello, and Happy New Year. I have Elfin EW11A WiFi RS-485 adapter, and I need "HF SmartLink V8" android application, for it. This application is mentioned in the documentation, but the download page on your web site does not have it. Could you please let me know how to obtain or where to download it? Best regards, --Alek

I want to connect the original CHINT DDSU-666 energy meter sold together with the HUAWEI SUN 2000 inverter via RTU, but via Wi-Fi, is it possible? I am using 2 EW11-A devices. One EW11-A connected to the inverter and the other to the Meter. Both can access the Wi-Fi network. The equipment connected to the Inverter can see activity on the RTU port, but the equipment connected to the Meter cannot se

有一个HF9624通电正常，但是不能启动进入系统，现在需要售后维修，不知道怎么联系？

测试结果：心跳包能正常发送，电子秤设备（FA2204B 波特率1200）上报数据无法正常发送 使用232转接usb到电脑，可以正常接受到数据。请问如何解决？

联网上不了，如何判断设备是否损坏，有什么软件可测试？