I have noticed several improvements in Wyze hardware over time. The plug is just one example. Wyze is constantly looking to improve their hardware.
The OG plug was improved to the 2021 version and then to the 2022 version. The CFH versions have a CFH “Key” logo on the back.
The 2021 versions are more network stable and are still being sold until stock runs out. The 2022 versions added an internal safety temp overheat shutdown notification.
The only way to tell the difference in the 2021 and 2022 is by the firmware on the plug. The changes and updates were announced in the forum Wyze News channel when the firmware was released and on the Firmware Updates page.
