1. Introduction
The HanLinYue Free2 Mini Keyboard is a versatile two-key Bluetooth device designed to enhance your interaction with various digital platforms. It functions as an e-book page turner, a remote control for short videos, music, and camera functions. Featuring hot-swappable mechanical switches and RGB backlighting, it offers a customizable and convenient experience for users of tablets, phones, and e-readers.

Image: The HanLinYue Free2 Mini Keyboard, a compact two-key device.
2. Product Overview
2.1 Key Features
- Power Switch: Flexible power on and off control.
- RGB Full-Color Backlight: Supports a variety of light colors for customization.
- Hot-Swappable Key Shafts: Compatible with three-legged short mechanical switches, allowing for easy replacement and customization.
- Power/Mode Switching: Seamlessly switch between multiple device modes for broad compatibility.
- Bluetooth 5.4: Ensures stable and responsive wireless connection.
- No Mouse/Touch Point Interference: Designed for a pure reading experience, compatible with approximately 98% of e-paper book readers on the market.
- Automatic Sleep & Reconnection: Enters deep sleep after 30 minutes of inactivity to conserve power and automatically reconnects upon waking.

Image: Diagram highlighting key features: power switch, RGB backlight, hot-swappable key shaft, and power/mode switching.
2.2 Package Contents
- HanLinYue Free2 Mini Keyboard (Page Turner) x 1
- User Manual x 1
- USB Data Cable x 1
3. Specifications
| Attribute | Detail |
|---|---|
| Material | ABS + Electronic Components |
| Axis Type | Recommended High-Profile Cross Triangle Short Axis (Red Axis: Silent Linear, Blue Axis: Paragraph) |
| Keycap Type | MOA Cross Keycap |
| Bluetooth Version | 5.4 |
| Product Dimensions | 46 x 26 x 26 mm |
| Product Weight | Approx. 16 grams |
| Remote Control Distance | Approx. 10 meters |
| Battery Capacity | 130mAh |
| Execution Standard | GB 4943-2022 |

Image: Diagram showing the dimensions of the Free2 Mini Keyboard (46mm x 26mm x 26mm).

Image: Table detailing product specifications including material, axis type, keycap type, Bluetooth version, dimensions, weight, remote distance, battery, and standard.
4. Setup
4.1 Charging the Device
Before first use, ensure the Free2 Mini Keyboard is fully charged. Connect the provided USB data cable to the USB port on the device and to a standard USB power source (e.g., computer, wall adapter).
4.2 Power On/Off
Locate the "ON/OFF/Function" switch on the side of the device. Slide the switch to the "ON" position to power on the keyboard. Slide it to "OFF" to power it down.
4.3 Bluetooth Pairing
- Ensure the Free2 Mini Keyboard is powered on.
- On your host device (phone, tablet, PC), navigate to the Bluetooth settings.
- Search for available devices. The Free2 Mini Keyboard should appear as "Free2".
- Select "Free2" to initiate the pairing process. Once paired, the device will be ready for use.

Image: Illustration of Bluetooth pairing and the automatic reconnection feature after sleep mode.
4.4 Mode Switching
The Free2 Mini Keyboard supports multiple operating modes for different applications. Use the "Function" button (often integrated with the ON/OFF switch) to cycle through available modes. Refer to the compatibility tables in Section 5.1 for specific device and function support.
4.5 Kindle Compatibility
For Kindle e-readers, an auxiliary reading aid clip is required for optimal page-turning functionality. This clip physically interacts with the Kindle screen to simulate touches, enabling the Free2 to control page turns.

Image: A Kindle e-reader shown with an auxiliary clip attached, demonstrating how the Free2 can be used for page turning.
5. Operating Instructions
The Free2 Mini Keyboard offers various functionalities depending on the connected device and selected mode.
5.1 General Functions
- Reading Page Turning: Use the two keys to turn pages forward and backward in e-books, documents, or web pages on mobile phones, tablets, and e-readers.
- Short Video Scrolling: Control scrolling up and down in short video applications (e.g., Douyin, Kuaishou) with a single click.
- Music Switching: Switch between music tracks in compatible music players (e.g., Cool Dog, QQ Music, NetEase Cloud Music).
- Remote Photo/Video: Act as a remote shutter button for taking photos or starting/stopping video recordings using your device's native camera application.

Image: Icons representing the main functions: reading page turning, short video scrolling, music switching, and remote photo/video.

Image: Visual representation of compatibility with mobile phones, tablets, and e-readers for various functions.
5.2 Compatibility Tables
The Free2 Mini Keyboard features different firmware modes ("Green Light Firmware" for e-book/PC and "Blue Light Firmware" for phone/tablet) to optimize compatibility. Please refer to the tables below for detailed function support.
Green Light Firmware (E-book / PC)

Image: Table showing compatibility for e-book readers (Zongheng, Hanwang, Wenshi, Kobo) and PC applications (Douyin, PPT, Reading, Web browsing, Music switching) under Green Light Firmware.
Blue Light Firmware (Phone / Tablet)

Image: Table showing compatibility for Apple and Android phones/tablets for functions like vertical short video, reading books, music switching, and photo/video. Also notes Kindle compatibility with an auxiliary clip.
5.3 Power Saving and Reconnection
To conserve battery, the device will enter a deep sleep state after 30 minutes of no operation, and the Bluetooth connection will be disconnected. To wake the device and automatically reconnect, simply press any key on the keyboard.
6. Maintenance
6.1 Cleaning
Wipe the device with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials that could damage the surface.
6.2 Key Switch Replacement (Hot-Swappable)
The Free2 Mini Keyboard features hot-swappable key shafts, allowing you to easily change the mechanical switches without soldering. To replace a switch:
- Gently pull off the keycap from the switch.
- Using a switch puller tool (not included), carefully grip the switch and pull it straight up to remove it from the PCB.
- Align the pins of the new three-legged short switch with the holes on the PCB.
- Press the new switch firmly into place until it clicks.
- Reattach the keycap.

Image: Diagram illustrating the hot-swappable nature of the key shafts and compatible keycap types.

Image: Examples of compatible switches: Red Axis (Silent Linear) and Blue Axis (Paragraph).
7. Troubleshooting
7.1 Bluetooth Disconnection or Page Turning Issues
Symptom: The device experiences broken Bluetooth links or fails to turn pages, especially after switching modes or firmware.
Cause: The Free2 Mini Keyboard has multiple built-in firmwares. Switching between modes or firmwares can sometimes interfere with previously established Bluetooth connection data, preventing proper interactive transmission.
Solution:
- On your host device, go to Bluetooth settings and "unpair" or "forget" the "Free2" device.
- Power off the Free2 Mini Keyboard using the ON/OFF switch.
- Wait a few seconds, then power the Free2 Mini Keyboard back on.
- Re-pair and reconnect the Free2 Mini Keyboard to your host device via Bluetooth.
Note: If you are unsure about the compatibility of your e-reader model, please contact customer support for confirmation.
8. User Tips
- Customization: Take advantage of the hot-swappable switches and compatible keycaps to personalize your typing feel and aesthetics.
- Battery Life: The automatic sleep and reconnection feature helps extend battery life. Remember to fully charge the device when the battery indicator is low.
- Optimal E-reader Use: For the best experience with Kindle and similar e-readers, consider using an auxiliary reading aid clip to ensure seamless page turning.
- Stable Connection: Bluetooth 5.4 provides a robust connection. Ensure your host device's Bluetooth is enabled and within the 10-meter range for uninterrupted use.
9. Warranty and Support
For warranty information, technical support, or further assistance, please refer to the contact details provided by your retailer or visit the official YANFU product support website. Keep your proof of purchase for warranty claims.