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*Under Wired Mode, Keyboard will not enter into Battery Saver Mode.
BLUETOOTH MODE
1. Switch the keyboard to Bluetooth option.
2. Backlit will be turned on.
3. Hold "Fn+1" key for 4 seconds to activate Bluetooth pairing (the Bluetooth
indicator fast flashes for 3 minutes to detect pairing.
4. Search for the Bluetooth device "Keychron K4" on your device and connect it (the
Bluetooth indicator goes off after successful pairing).
Note: This keyboard supports pairing up to 3 devices simultaneously via combination
key “fn” + “1” / “fn” + “2” / “fn” + “3”.
*The Bluetooth indicator will continue to flash for 3 minutes.
**Slow or failed connections may exist due to different Bluetooth versions, please make
sure all the settings are correct.
Switch Bluetooth Devices
Short press combination key “fn” + “1” / “fn” +”2” / “fn” + “3” to switch to the other device.
Reconnect
1. Switch the keyboard to the Bluetooth option to activate the keyboard (the
keyboard will connect to the last connected device by default).
2. The Bluetooth indicator flashes for 4 seconds and automatically pairs with the
last paired device.
3. If the Bluetooth indicator is off, press any button to enter the connection again.
*The keyboard must have been paired with the device to perform this function.
Turn off the Keyboard
Switch to “Off”
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