If you currently have an iotty Smart Switch (U1, U2, or U3 models) you have a first generation iotty Smart Switch. This includes purchases from iottysmarthome.com dated September 2022 or earlier.
The second generation of the iotty Smart Switch (1, 2, 3, and 4 Switch Controllers and the Dimmer Module [sold separately]) was introduced via Pre-sale (Ships December 2022) in October 2022.
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