history: 0
↺ Reset
Remote
· invoker
💡 Light on
💡 Light off
🌡 Heat +
⎌ Undo
History stack
· command objects
Devices
· receivers
💡
Living-room Light
OFF
🌡
Thermostat
20°C
Press a remote button
Watch the two hops: button →
command object on the stack
→ device.
▸
The remote never touches a device — it only builds command objects. The stack of those objects is what makes
⎌ Undo
possible.