Looking for Pizo-Electric Zigbee or Z Wave Switches - No batteries or external power required

I am about to build a new house and I want to use something like this to avoid the cost of wiring light switches.

Anyone have any experience with these?

Recommendations?

Something like this: http://www.alibaba.com/product-detail/high-quality-self-powered-wireless-water_60110964772.html

or http://www.alibaba.com/product-detail/z-wave-switch-zigbee-wall-switch_1916204088.html

Don’t cut cost by not running wires and switches. I wired quite a few houses before. You should add more wires for future expansion instead. Pizo switches still quite far away for home automation so stick with wires for reliability and options.

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Hue’s TAP works in this fashion. Doesn’t integrate with anything but the Hue bridge, though, I’m not sure what the network protocol is.