eWeLink DC5V 12V 24V 32V Wifi Switch Wireless Relay Module

This is a good design for anyone with engineering experience. I use it to control the ventilation fan of the house. I can use the MicroUSB cable for the initial configuration and then connect it to the 24 V AC power of the home. The mobile application is also very good, but the "Add device" command in the application is slightly different from the command in the package. I did some tests and finally I connected the device from the application. This product does not have a plastic housing or similar, so make sure the cables are well protected, especially for high pressure applications. Anyway, I still give this product a five-star rating.

The wiring diagram attached to the device is incorrect! The use of a USB power source to power the relay, and then use that power source to operate the second device requires a bridge from the input terminal + to the device and from the terminal to the relay input. It is not clear from the figure that the figure is really misleading.

I have an Orbi Mesh system which combines the 2.4 & 5G signals. Going into Advanced settings, Wireless settings, uncheck the 5G settings. Reacquire your device (Galaxy Note 4 in my case) to your new WiFi settings... then eWelink will setup correctly.