Toggle switches with the Hue wall switch module are theoretically possible - Hueblog.com
Setting up Philips' Hue Wall Switch Module with HomeKit and Shortcuts Automation | riedel.wtf
Philips Hue on Twitter: "Coming soon: the wall switch module! Make any light switch smart by installing this little gadget behind the wall plate. Your smart lights stay reachable — and you
The most important answers about the new Philips Hue Wall Switch Module - Hueblog.com
My thoughts on the Philips Hue Wall Switch Module - Hueblog.com
Philips Hue Wall Switch Module review: smart-ish, at last - The Verge