HF-BL500 低功耗蓝牙（BLE 5.0）模组 ，串口助手连接后一直ERR 发送：AT：HELP 发送："AT:RST"和AT:RELD"一样，，一直ERR

串口及tcp有发送同报文接收反馈 但串口与网口间无法透传相互接收数据

能否通过rs232口给设备供电，或者可以定制串口供电的功能

I can only connect maximum 3 x EW11A TCP Clients to a single EW11A as TCP Server. Is this the maximum Clients?

I'm using firmware version 1.42.0. As you can see in the attached image, my computer connects MQTT but the HF2211A does not connect. How can I solve?

I cannot configure the IoT device HF2411 to send JSON messages to our web server. Please help.