How To Test 3 Way Switch

I'm wiring my new addition and i need to wire in 3 switches to turn off Automating a 3-way / 4-way / 3-way switch wiring without neutral line Wiring dimmer eaton automating database

I'm wiring my new addition and i need to wire in 3 switches to turn off

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[FAQ] GE 3-Way Wiring - FAQ - SmartThings Community

I'm wiring my new addition and i need to wire in 3 switches to turn off

Automating a 3-way / 4-way / 3-way switch wiring without neutral line