www.serenashades.com has the design page. Lowes and HomeDepot are going to use the same page to design/order Serena products. Even if you only have a couple of shades, I recommend you add them to a Caseta system. The control and programming options are worth the price of a bridge. Caseta is, of course, HomeKit compatible. A bridge is required for HomeKit, remote access, and scheduling. Manual programming is somewhat complicated. I would not do a system without a bridge, unless it was 1 or 2 devices. A bridge now can control 75 devices. If you go beyond that, you could add a 2nd Caseta bridge but they will not talk to each other. You would need a 3rd party system to communicate between them. Make sure you check the power requirements. I believe Caseta is currently only available in 120v versions. Japan uses different voltage and possibly 50hz. The shades are battery but can be hard-wired. Caseta is line voltage only. My question for you is, "Do they have HomeDepot and Lowes in Japan?"