Logitech HARMONY Mode D'emploi page 4

Congratulations on the purchase
of Harmony Companion
The Harmony Hub is the center of your Harmony system—always keep it
powered on!
1.
The hub receives commands from the remote or mobile app The remote itself does
not send commands directly to your devices
2.
The hub sends commands to your audio video and home control devices in the form
of Bluetooth, Wi-Fi, and infrared signals (IR)
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