FREEWOLF M21 Digital Mini Keyboard User Manual

1. Introduction

Thank you for choosing the FREEWOLF M21 Digital Mini Keyboard. This 21-key wireless numeric keypad offers both Bluetooth and 2.4G dual-mode connectivity, a Type-C charging port, and a 950mAh battery. Designed with color-blocked keycaps, an ergonomic tilt angle, and plug-and-play functionality, it is an ideal companion for efficient number entry across various operating systems.

This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your M21 keyboard to ensure optimal performance and longevity.

Figure 1: FREEWOLF M21 Wireless Digital Numpad Overview

2. Package Contents

• M21 Keyboard x1
• Type-C Charging Cable x1
• 2.4G Receiver x1
• User Manual x1

3. Setup

3.1 Keyboard Layout and Components

Figure 2: M21 Keyboard Layout

The M21 keyboard features a power switch, a NumLock indicator, a Type-C port for charging, and a storage compartment for the 2.4G receiver.

3.2 Charging the Keyboard

Connect the provided Type-C charging cable to the keyboard's Type-C port and a power source. The red light will stay on during charging and turn off when fully charged. The red light will flash when the battery is low, indicating it needs to be recharged.

3.3 Connecting via 2.4G Wireless Receiver

1. Locate the 2.4G receiver in its storage compartment on the keyboard.
2. Plug the 2.4G receiver into an available USB port on your computer.
3. Turn on the keyboard using the power switch.
4. The keyboard is plug-and-play by default. If the connection is not established or pairing fails, press and hold the FN + 3 keys simultaneously to initiate pairing. Once successfully paired, the keyboard will function normally.

Figure 3: 2.4G Wireless Receiver and Storage

3.4 Connecting via Bluetooth

The M21 keyboard supports two Bluetooth connections (M21-1 and M21-2).

1. Turn on the keyboard using the power switch.
2. For Bluetooth 1: Press the FN + 1 keys. Short press to switch modes. Long press to enter discovery mode. A green light indicator will show when ready. The Bluetooth name is "M21-1".
3. For Bluetooth 2: Press the FN + 2 keys. Short press to switch modes. Long press to enter discovery mode. A blue light indicator will show when ready. The Bluetooth name is "M21-2".
4. On your device (computer, laptop, tablet), search for Bluetooth devices and select "M21-1" or "M21-2" to connect.

Figure 4: Dual-Mode Connection Switching

The keyboard is compatible with Windows 8, Windows 10, Windows 11, Android, Mac, and other operating systems.

4. Operating Instructions

4.1 System Switching and Lighting Effects

Use the following combination keys for various functions:

• FN + Esc: Toggles backlight OFF/ON.
• FN + Tab: Switches between backlight modes (Rainbow, Scrolling, Breathing Color Cycle, Single-Color Scrolling, Mixed Color Constant On - Cycle Mode).
• FN + Back: Opens the Calculator application.
• FN + 4: Decreases backlight brightness.
• FN + 6: Increases backlight brightness.

Figure 5: Lighting and Function Shortcuts

4.2 Hibernation

To conserve battery, the keyboard's backlight will turn off after 2 minutes of inactivity, entering an idle state. After an additional 10 minutes, it will enter deep sleep mode. Press any key to wake the keyboard.

5. Maintenance

5.1 Cleaning

To clean your M21 keyboard, gently wipe the keycaps and surface with a soft, dry, lint-free cloth. For stubborn dirt, a slightly damp cloth can be used, ensuring no moisture enters the keyboard's internal components. Avoid using harsh chemicals or abrasive materials.

5.2 Battery Care

The M21 keyboard is equipped with a 950mAh NTC battery. To prolong battery life:

• Avoid fully discharging the battery frequently.
• Charge the keyboard when the low battery indicator flashes.
• Do not expose the keyboard to extreme temperatures.
• If storing the keyboard for an extended period, charge it to about 50% before storage.

6. Troubleshooting

• Keyboard not responding (2.4G): Ensure the 2.4G receiver is securely plugged into a USB port and the keyboard is turned on. If issues persist, try re-pairing by holding FN + 3.
• Keyboard not responding (Bluetooth): Ensure Bluetooth is enabled on your device and the keyboard is in discovery mode (long press FN + 1 or FN + 2). Try removing the device from your computer's Bluetooth settings and re-pairing.
• Backlight not working: Press FN + Esc to toggle the backlight on/off. Check battery level; low battery might disable backlighting.
• Charging issues: Ensure the Type-C cable is properly connected to both the keyboard and the power source. Try a different Type-C cable or USB port.
• Keys not registering: Ensure the keyboard is fully charged and properly connected. Clean around the affected keys to remove any debris.

7. Specifications

Figure 6: Product Parameters

8. User Tips

• Quick Mode Switching: For seamless transitions between devices, remember the FN + 1 (Bluetooth 1), FN + 2 (Bluetooth 2), and FN + 3 (2.4G) shortcuts.
• Optimize Battery Life: Utilize the backlight brightness controls (FN + 4 and FN + 6) to adjust illumination. Lower brightness or turning off the backlight can significantly extend usage time between charges.
• Dedicated Calculator Key: The FN + Back shortcut provides quick access to your system's calculator, enhancing productivity for number-intensive tasks.
• Receiver Storage: Always store the 2.4G receiver in its designated compartment when not in use to prevent loss, especially when traveling.

9. Warranty and Support

The FREEWOLF M21 Digital Mini Keyboard comes with a manufacturer's warranty. Please refer to the official FREEWOLF website or your purchase documentation for specific warranty terms and conditions.

For further assistance, detailed product information, or to download the latest version of this manual, please visit the official FREEWOLF support page:

http://www.freewolf.cn/downa.aspx?ClassID=19

A PDF version of the user manual is also available for download: M21 User Manual (PDF)