FREEWOLF M21 Wireless Numeric Keypad User Manual

1. Introduction

The FREEWOLF M21 is a versatile 21-key wireless numeric keypad designed for enhanced productivity in various applications, including finance, accounting, and general data entry. It features dual-mode connectivity (Bluetooth and 2.4G wireless), a convenient Type-C charging port, and a long-lasting 950mAh battery. Its ergonomic design, colorful backlighting, and broad compatibility make it an ideal companion for laptops and desktops.

2. Package Contents

Please check the package for the following items:

• FREEWOLF M21 Wireless Numeric Keypad
• USB Type-C Charging Cable
• 2.4G Wireless Receiver (stored inside the keypad)
• User Manual (this document)

3. Setup Guide

3.1 Charging the Keypad

Before first use, fully charge the keypad using the provided USB Type-C cable. Connect one end to the keypad's Type-C port and the other end to a USB power source (e.g., computer USB port, wall adapter).

3.2 Connecting the Keypad

The M21 keypad supports dual-mode wireless connection: Bluetooth and 2.4G wireless.

3.2.1 2.4G Wireless Connection

1. Locate the 2.4G wireless receiver. It is typically stored in a compartment on the keypad for convenience.



2. Plug the 2.4G wireless receiver into an available USB port on your computer.
3. Turn on the keypad.
4. Press FN + 3 (labeled 2.4G) simultaneously to switch to 2.4G connection mode. The keypad should connect automatically.

3.2.2 Bluetooth Connection (BT1 / BT2)

The keypad supports two independent Bluetooth connections (BT1 and BT2).

1. Turn on the keypad.
2. Press and hold FN + 1 (labeled BT1) for a few seconds to enter Bluetooth pairing mode for BT1. The indicator light will flash.
3. On your computer or device, enable Bluetooth and search for new devices.
4. Select "M21-1" from the list of available devices to pair.
5. Repeat steps 2-4 using FN + 2 (labeled BT2) and "M21-2" to connect a second Bluetooth device, if desired.

3.3 Compatibility

The FREEWOLF M21 keypad is compatible with Mac, Windows 8, Windows 10, Windows 11, and above operating systems. It is plug-and-play, requiring no additional driver installation.

3.4 Asynchronous Non-Switching

The keypad features an asynchronous digital input design, allowing it to function independently without affecting other keyboards connected to your system. This means your main keyboard's number row or integrated numpad will not be disabled when using the M21.

4. Operating Instructions

4.1 Basic Keypad Functions

The M21 features a standard 21-key numeric layout, including number keys (0-9), arithmetic operators (+, -, *, /), Enter, Backspace, Num Lock, ESC, TAB, and FN keys.

4.2 Backlight Control

The keypad features multicolor backlighting with various effects. Use the following FN key combinations to control the lighting:

• FN + ESC: Toggle Lights ON/OFF
• FN + TAB: Switch lighting mode (e.g., single light, mixed color, constant light, loop mode)

4.3 Calculator Shortcut

Quickly launch your computer's calculator application using the following shortcut:

• FN + =: Launch Calculator

5. Maintenance

5.1 Cleaning

• Disconnect the keypad from your device before cleaning.
• Use a soft, dry cloth to wipe the surface of the keypad.
• For stubborn dirt, lightly dampen the cloth with water or a mild cleaning solution. Avoid excessive moisture.
• Do not use harsh chemicals, abrasive cleaners, or solvents, as these may damage the keypad's finish or keycaps.
• Use compressed air to remove dust and debris from between the keycaps.

5.2 Battery Care

• To prolong battery life, avoid fully discharging the keypad frequently.
• If storing the keypad for an extended period, charge it to about 50% before storage.
• Avoid exposing the keypad to extreme temperatures (hot or cold), as this can affect battery performance and lifespan.

6. Troubleshooting

6.1 Keypad Not Responding

• Check Battery: Ensure the keypad is charged. Connect it to a power source using the Type-C cable.
• Check Connection Mode: Verify that the keypad is in the correct connection mode (2.4G, BT1, or BT2) for your device. Use FN + 1/2/3 to switch modes.
• 2.4G Connection: Ensure the 2.4G receiver is securely plugged into a working USB port on your computer. Try a different USB port.
• Bluetooth Connection:
  • Ensure Bluetooth is enabled on your device.
  • Try re-pairing the keypad with your device. Go to your device's Bluetooth settings, remove "M21-1" or "M21-2", and then re-pair as described in Section 3.2.2.
  • Ensure the keypad is not connected to another device via Bluetooth.
• Restart: Turn the keypad off and then on again. Restart your computer or device.

6.2 Backlight Not Working

• Toggle Lights: Press FN + ESC to ensure the backlight is not simply turned off.
• Change Mode: Press FN + TAB to cycle through different lighting modes, as some modes might appear dim or off depending on the setting.
• Battery Level: Low battery might affect backlight functionality. Charge the keypad.

6.3 Keys Not Registering Correctly

• Clean Keys: Ensure there's no debris under the keycaps. Refer to Section 5.1 for cleaning instructions.
• Num Lock: Ensure the Num Lock key is activated if you are expecting numeric input.

7. Specifications

8. User Tips

• Ergonomics: The keypad features an ergonomic tilt angle. Position it comfortably to reduce wrist strain during prolonged use.



• Battery Life: For optimal battery performance, avoid letting the keypad completely drain before recharging.
• Switching Devices: If you use the keypad with multiple devices, remember to switch the connection mode using the FN + 1/2/3 shortcuts.
• Keycap Durability: The color-blocked keycaps are designed to be wear-resistant and anti-shine, ensuring longevity and maintaining their aesthetic appeal.

9. Warranty and Support

For warranty information and technical support, please refer to the manufacturer's official website or contact the seller directly. Keep your proof of purchase for any warranty claims.