Einführung
This manual provides detailed instructions for the Keychron K3 Version 2 Ultra-Slim Mechanical Keyboard. Please read this manual thoroughly before using the keyboard to ensure proper setup and operation. The Keychron K3 is a compact 75% layout ultra-slim wireless mechanical keyboard designed for productivity and a tactile typing experience.

Image: Keychron K3 keyboard integrated into a multi-device workspace.
Aufstellen
Packungsinhalt
- 1 x Fully Assembled Keychron K3 Keyboard
- 1 x USB-A to USB Type-C Cable
- 1 x Tastenkappen-Abzieher.
- Extra keycaps for Windows and Mac operating systems
Konnektivitätsmodi
The Keychron K3 supports both wireless Bluetooth 5.1 and wired USB Type-C connections.

Image: Visual guide for connecting the Keychron K3 via USB or Bluetooth.
Bluetooth Verbindung:
- Locate the mode switch on the side of the keyboard. Slide the switch to the Bluetooth Position.
- Halten Sie die Fn + 1 keys simultaneously until the Bluetooth indicator light flashes repeatedly, indicating pairing mode.
- On your device (laptop, PC, tablet, or phone), enable Bluetooth, search for "Keychron K3", and connect.
- The keyboard can connect to up to 3 devices. Use Fn + 1, Fn + 2, oder Fn + 3 um zwischen gekoppelten Geräten zu wechseln.
Note: Keep the distance between the keyboard and the device within reasonable limits to minimize signal interference.
Kabelverbindung:
- Locate the mode switch on the side of the keyboard. Slide the switch to the Kabel Position.
- Connect the provided USB Type-C cable from the keyboard to your computer's USB port.
- The keyboard will be recognized automatically as a plug-and-play device.
Betriebssystemkompatibilität
The Keychron K3 is compatible with both Mac and Windows operating systems. It includes extra keycaps for both systems.

Image: Side switches for selecting operating system layout and connection type.
Use the dedicated switch on the side of the keyboard to select between Win/Android Und Mac/iOS layouts. Ensure the correct layout is selected for optimal functionality.
If the keyboard layout does not match your device exactly, consider updating the keyboard's firmware from the official Keychron webWebsite.
Betrieb
Tipperfahrung
The Keychron K3 features low-profile Keychron mechanical switches (Red Switch variant) which are 40% slimmer than conventional switches. This design results in a shorter pre-travel and total travel distance, allowing for faster input and feedback.

Bild: Niedrigprofilfile ABS keycaps on the Keychron K3.
Steuerung der Hintergrundbeleuchtung
The keyboard is equipped with a white LED backlight. You can adjust the brightness and switch between various lighting effects using the dedicated function keys.

Image: White LED backlighting illuminates the keys and low-profile red mechanical switches.
- Drücken Fn + F5 um die Helligkeit der Hintergrundbeleuchtung zu verringern.
- Drücken Fn + F6 um die Helligkeit der Hintergrundbeleuchtung zu erhöhen.
- Drücken Fn + F4 to cycle through different backlight effects.
Multimedia-Schlüssel
The K3 includes all necessary Mac multimedia keys and is also compatible with Windows multimedia functions. These keys are typically accessed by pressing the Fn key in combination with the top row function keys (F1-F12).
- Fn + F1Verringern Sie die Bildschirmhelligkeit.
- Fn + F2: Bildschirmhelligkeit erhöhen
- Fn + F7: Vorheriges Lied
- Fn + F8: Wiedergabe/Pause
- Fn + F9: Nächster Titel
- Fn + F10: Stumm
- Fn + F11: Lautstärke runter
- Fn + F12: Lauter
Wartung
Reinigung der Tastatur
To maintain optimal performance and appearance, regularly clean your Keychron K3 keyboard.
- Tastenkappen: Verwenden Sie den mitgelieferten Tastenkappenabzieher, um die Tastenkappen vorsichtig zu entfernen. Reinigen Sie sie anschließend mit einem weichen Tuch.amp Bei Bedarf mit einem Tuch und milder Seife behandeln. Sicherstellen, dass sie vor dem Wiederanbringen vollständig trocken sind.
- Tastaturgehäuse: Wipe the aluminum body and plastic bottom frame with a soft, lint-free cloth. For stubborn dirt, a slightly damp Ein Tuch kann verwendet werden. Übermäßige Feuchtigkeit vermeiden.
- Schalter: Use compressed air to remove dust and debris from around and under the switches.
Batterieinformationen
The Keychron K3 is powered by a rechargeable battery. The battery life can last up to 34 hours on the lowest brightness setting.
- Laden: Connect the keyboard to a power source using the USB Type-C cable. The charging indicator light will show the charging status.
- Batterieschonung: To prolong battery life, turn off the backlight when not needed and switch the keyboard to wired mode when possible.
Fehlerbehebung
Verbindungsprobleme
- Bluetooth stellt keine Verbindung her:
- Ensure the keyboard's mode switch is set to Bluetooth.
- Verify the keyboard is in pairing mode (Fn + 1/2/3 blinken).
- Überprüfen Sie die Bluetooth-Einstellungen Ihres Geräts und stellen Sie sicher, dass es auffindbar ist.
- Try forgetting the device on your computer and re-pairing.
- Stellen Sie sicher, dass der Akku der Tastatur geladen ist.
- Kabelverbindung funktioniert nicht:
- Ensure the keyboard's mode switch is set to Kabel.
- Probieren Sie einen anderen USB-Anschluss an Ihrem Computer aus.
- Test with a different USB Type-C cable.
Tasten reagieren nicht
- Ensure the keyboard is properly connected (Bluetooth or wired).
- Check if the correct operating system layout is selected (Mac/iOS or Win/Android).
- Restart the keyboard by cycling the power switch off and on.
- If specific keys are not working, try removing the keycap and clearing any debris around the switch.
Probleme mit der Hintergrundbeleuchtung
- Ensure the backlight is not turned off or set to the lowest brightness. Use Fn + F6 Helligkeit zu erhöhen.
- If the backlight is inconsistent, ensure the keyboard battery is sufficiently charged.
Technische Daten

Image: Keychron K3 75% compact layout with dimensions.

Image: Ultra-slim body design and low-profile switch comparison.

Image: Detailed specifications for the Keychron Low Profile Mechanical Red Switch.
| Besonderheit | Detail |
|---|---|
| Marke | Schlüsselchron |
| Modellnummer | K3A1 |
| Konnektivitätstechnologie | Bluetooth 5.1, USB Type-C wired |
| Anzahl der Schlüssel | 84 |
| Schaltertyp | Niedriger Profile Gateron Mechanical - Red |
| Hintergrundbeleuchtung | Weiße LED |
| Kompatible Geräte | Laptop, PC, Smartphone, Tablet |
| Kompatibles Betriebssystem | MacOS, Windows |
| Produktabmessungen (L x B x H) | 12.05" x 4.57" x 0.83" |
| Artikelgewicht | 500 Gramm |
| Gehäusematerial | Acrylnitril-Butadien-Styrol, Aluminium |
| Battery Life (lowest brightness) | Bis zu 34 Stunden |
Garantie und Support
Garantieinformationen
The Keychron K3 Version 2 keyboard comes with a 1 Jahr eingeschränkte Garantie Diese Herstellergarantie deckt Material- und Verarbeitungsfehler bei normalem Gebrauch ab. Bitte bewahren Sie Ihren Kaufbeleg für Garantieansprüche auf.
For detailed warranty terms and conditions, please refer to the official Keychron webWebsite oder wenden Sie sich an den Kundendienst.
Kundenservice
For further assistance, technical support, or warranty inquiries, please visit the official Keychron webWebsite:
You may also find helpful resources, FAQs, and firmware updates on their support pages.