The best version of Z-Wave is 800 series, Z-Wave Plus V2 released in 2022. It builds upon over 20 years' of technical advancements within the wireless, smart home space to offer all new levels of security, wireless speed, and battery performance. You can learn more at https://atrim.co/zwave/z-wave-800-series.html and you can shop 800 series products at https://www.zwaveproducts.com/collections/z-wave-800-series-products