I’ve been diving into the world of wireless battery-powered switches for my smart home setup, and I wanted to share some insights and experiences that might help others facing similar challenges. 
For those looking to replace traditional paddle switches with a more modern, smart solution, the ZRC-90US device has been a game-changer for me. It’s battery-powered, which is perfect for low-voltage setups, and it seamlessly integrates with Z-Wave. However, as some users mentioned, it comes with 8 buttons, which might be more than needed for a single location. My workaround? Programming all buttons to control the same smart light. It’s a bit of a hack, but it works like a charm! 
If you’re on a budget or prefer a simpler solution, Dry Contact devices could be worth exploring. They’re designed for low-power applications and don’t require external power, which is ideal for existing wall boxes. That said, availability and compatibility can vary, so it’s worth doing a bit of research before committing. 
One thing I’ve learned is the importance of battery life. A good-quality battery can make all the difference in the longevity and reliability of these switches. I’ve started using rechargeable lithium batteries for a more sustainable option, and they’ve held up beautifully. 
For anyone looking to integrate multiple brands or devices, my advice is to start small and test each component thoroughly. It’s tempting to go all-in, but troubleshooting is much easier when you can isolate the issue to a specific device or setup. 
Lastly, don’t underestimate the value of community support. Forums like this are goldmines of information and tips. If you’re stuck, chances are someone else has been there and can offer a solution or at least a sympathetic ear. 
If you’ve got any questions or tips about wireless switches or smart home setups, I’d love to hear them! Let’s keep the conversation going!