Elgato Key Light

Elgato Key Light, Key Light Air, Key Light Mini and Light Strip have a small HTTP API on the local network (port 9123). DroidDeck uses it directly — Elgato Control Center doesn't need to be open, and there's no account.

Setup

Each button carries the light's IP. Find it in Elgato Control Center → the light's settings, or in your router. Give the light a fixed IP (DHCP reservation in the router) so the buttons keep working. A different port goes after a colon: 192.168.0.50:9123.

What you can do

Operation	Parameters
Toggle / On / Off	—
Set brightness	1 to 100 % (also turns the light on)
Brightness (+/-)	Step from -100 to 100 %
Set temperature	2900 to 7000 K
Temperature (+/-)	Step in K; positive makes the light cooler (bluer)

With several lights in one device, all of them change. The Light Strip has colour instead of temperature: on it, use toggle and brightness.