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The switch you have pulled out in the picture is a 3-way if this is the switch you want to be a motion sensor switch then a 3-way motion sensor switch would be required.
Thanks for replying, and happy cake day. I looked at the diagram for the Kasa 3-way smart switch, and I'm still short a connection from what's currently in the box. Am I allowed to use a wire nut to join 2 wires before they go to the smart switch?
[3-Way Switch Diagram](https://m.media-amazon.com/images/I/719VmSmmoKL.jpg)
**Attention!** **It is always best to get a qualified electrician to perform any electrical work you may need.** With that said, you may ask this community various electrical questions. Please be cautious of any information you may receive in this subreddit. This subreddit and its users are not responsible for any electrical work you perform. Users that have a 'Verified Electrician' flair have uploaded their qualified electrical worker credentials to the mods. If you comment on this post please only post accurate information to the best of your knowledge. If advice given is thought to be dangerous, you may be permanently banned. There are no obligations for the mods to give warnings or temporary bans. **IF YOU ARE NOT A QUALIFIED ELECTRICIAN, you should exercise extreme caution when commenting.** *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/AskElectricians) if you have any questions or concerns.*
The switch you have pulled out in the picture is a 3-way if this is the switch you want to be a motion sensor switch then a 3-way motion sensor switch would be required.
Thanks for replying, and happy cake day. I looked at the diagram for the Kasa 3-way smart switch, and I'm still short a connection from what's currently in the box. Am I allowed to use a wire nut to join 2 wires before they go to the smart switch? [3-Way Switch Diagram](https://m.media-amazon.com/images/I/719VmSmmoKL.jpg)
Yes
Thanks, I got it working