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I had a lot of extra footage from my Sonoff Mini vs Shelly One comparison video so I used it to make a separate video dedicated to 3-way switching.
There are lots of videos about 3 way switches. I expect this will be the last one I ever need to make.
The most important factor is having a smart switch that controls the Lights. Then, depending on your existing wiring you may be able to re-use that wiring to keep the 3-way functionality. If you can't reuse the 3-way wiring you can use other smart devices to create "virtual" 3-way switching.


Buy
Shelly One:
Direct from Shelly - http://drzzs.com/ShellyOne
Amazon - https://amzn.to/2Ktstvl

Sonoff Mini:
Direct from iTead - http://shrsl.com/1qmjj
Amazon - https://amzn.to/2Z3NB0H
Banggood - http://drzzs.com/SonoffMini

Tools:
Laser Temp - https://amzn.to/31GkiCZ
Heat Camera - http://drzzs.com/HeatCam

https://www.banggood.com/marketing-Ba...

ESPhomeFlasher: https://github.com/esphome/esphome-fl...

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