Product FAQ for SEENDA COE304 Pro

• Bluetooth: Windows 8 to 11, macOS 10.12 or later, iPadOS 10 or later,Android 5 or higher.

• 2.4G USB receiver: Windows only. (On a Mac, using the 2.4G receiver will give you a Windows key layout)

The USB is under the keyboard. There is a slot for stocking.

Below the Delete, Insert, PrtScr SysRq, and Scroll Lock keys in the upper-right corner of the keyboard, there are three indicator lights. From left to right, the meaning of each light is as follows:

• Light 1 = Charging/Battery indicator + Bluetooth Channel 1 light: Flashing red indicates low battery; solid green indicates charging; solid red indicates fully charged; blue indicates Bluetooth Channel 1.

• Light 2 = Caps Lock light + Bluetooth Channel 2 light: Solid red indicates Caps Lock is on; blue indicates the keyboard is on Bluetooth Channel 2.

• Light 3 = 2.4G/Wired channel light + Bluetooth Channel 3 light: Green indicates the keyboard is in 2.4G or wired mode; blue indicates the keyboard is on Bluetooth Channel 3.

Note: A slowly flashing blue light indicates that no device is currently connected on that channel; a quickly flashing blue light indicates that the corresponding channel is in pairing mode. When Light 3 is green, you can ensure the keyboard's USB or charging cable is connected to the computer port and then use key combinations to switch manually.

① Please make sure the keyboard is fully charged and that the correct connection channel is selected. For Bluetooth, press FN+Z/X/C to switch channel. For 2.4G mode, you need to plug in the USB receiver, press FN+V to switch to 2.4G mode, and disconnect the charging cable.

② Follow the re-pairing steps below according to the channel you have selected:

For 2.4G Channel:Turn on the keyboard and make sure the USB receiver is not plugged into the computer. Press FN+V to switch to 2.4G mode (Light 3 turns green). Then long-press ESC+K for about 3–5 seconds, until Light 3 flashes green quickly (about 3 flashes per second), indicating that it has entered 2.4G pairing mode. Then quickly plug in the receiver and move the keyboard as close to the port as possible. When the green 2.4G pairing light stops flashing slowly, it means the keyboard has completed re-pairing.

For BT Channel:If you have previously connected this keyboard via Bluetooth, please first delete the keyboard's connection record from your device. Then press FN+Z/X/C to select any one of the Bluetooth channels. After you see the corresponding channel indicator light turn blue and flash slowly (about once every 1–2 seconds), long-press the corresponding channel key among FN+Z/X/C again until the corresponding light flashes blue quickly (about 3 flashes per second), indicating that Bluetooth pairing mode has been successfully entered. At this point, you can open your device's Bluetooth list, search for nearby Bluetooth devices, and click to connect. After a successful connection, the corresponding pairing indicator light will stop flashing.

③ If the problem persists, please try connecting the keyboard using another mode to see whether it works properly.

Please ensure you have plugged the keyboard into your computer USB port instead of another wall adapter, and press FN+ B to switched to the wired mode, the Indicator 3 will light on Green.

It is also recommended to the previous wired cable which comes with the keyboard. If the issue remains, please test another A-C cable and test in another computer USB port and see if this works.

The charging indicator light is located between the DELETE and Insert keys:

While charging: the light stays solid green.When fully charged: the light stays solid red for 30 seconds and then turns off.When the battery is low: the light flashes red.

It takes approximately 8 hours to fully charge. The keyboard's battery capacity is 2000mAh.

①Check the charging indicator light status when plugged in for charging: A constantly lit red light during charging, and a constantly lit green light when fully charged.

②If the charging indicator light does not turn on red when plugged in, or if it does not turn green after 8 hours of charging, try using a different A-C charging cable and plug it into a USB port on a computer.

First, use the included charging cable to fully charge the keyboard and then perform a test.

Note: The keyboard has a battery capacity of 2000mAh. When the backlight is off, the power consumption is 15mA per hour. When the backlight is at its brightest, the power consumption is around 120mA per hour. Therefore, with high backlight brightness, the keyboard can last for about 15 hours, and with the backlight off, it can last for approximately 200 hours.

Backlit On/Off: FN+BackSpace

Switching Backlit Color: FN+\

Increase Backlit brightness: FN+I

Decrease Backlit brightness: FN+K

Slow down backlight speed: FN+J

Increase backlight speed: FN+L

Customizable Backlight: Fn + ~

Switch backlight mode: FN+Enter

1. Spectrum Flow (Default) → 2. Rainbow Cycle → 3. Breathing → 4. Static → 5. Snow Flow → 6. Ripple → 7. Rotation → 8. Meteor Trail → 9. Wave → 10. Waterfall → 11. Expand → 12. Burst → 13. Rain → 14. Reactive → 15. Sweep → 16. Pulse Zoom → 17. Dual Stream → 18. Matrix Cross → 19. Dual Color → 20. Dot Pulse → 21. Backlight Of

1. Press Fn + ~ to activate the custom backlight. Only one set of custom memory lighting is supported.

2. Custom light editing: After pressing Fn + ~ to activate the custom backlight, press Fn + ~ again to start editing the lighting. At this time, the NUM LOCK / CAPS LOCK / 2.4G / BT indicator lights will start flashing. Press the key you want to define, and each press will change the color. After editing, press Fn + ~ again to save the edited lighting.

①Make sure the keyboard is fully charged (a solid red charging light means 100%).

②Make sure you are in 2.4G connection or BT connection, and then open the Driver page and try to turn on the Backlit on driver

③If you need to use Bluetooth, please press and hold FN+DEL to see if this helps.

①Make sure the keyboard is fully charged (a solid red charging light means 100%).

②If it still won’t working normally, please try the following steps: Turn on the keyboard and backlit by press FN+END, press and hold the FN+TAB and see if you can changed the backlit mode

③If the issue remains, please go to the Custom Driver and checking if you have selected in one color: https://www.seenda.com/pages/setup?model=CRE98

①Fully charge the keyboard, then re‑pair.

②For a single stuck or unresponsive key, press it firmly and hold for 5–7 seconds. This can re‑seat the internal switch or clear debris.

③If the problem is a specific key typing extra characters (e.g., pressing “P” types “89p:”), try a to connect the keyboard via another device to see if this works.

Press the key forcefully for 5–7 seconds. Clean around the keycap with compressed air or a gentle brush. If the keycap has come off, check for broken plastic clips – if intact, press it back down until it clicks.

We don’t sell individual keycaps. If the key still works and the clips aren’t broken, snap it back into place. If the hinge or clip is damaged, contact support with your order number and a photo for warranty options.

In this case, it may be because your mobile phone is not configured to allow input from an external keyboard. Please follow the steps shown in the screenshot to adjust the settings and then try again:

First, ensure that the keyboard is successfully connected to your mobile phone, then go to Accessibility > Settings > Full Keyboard Access and enable Full Keyboard Access.

①Make sure your device’s keyboard language/layout is set correctly.

General Operating system settings:

On Windows, go to Settings > Time & Language > Language & Region>Switch the correct language layout.

On macOS, go to System Settings > Keyboard > Input Sources>Add the Correct Language layout(The selected logical layout is listed here.)

For iPad/Iphone: Settings - General - Keyboard - Keyboards - Add the Correct Language layout (Delete all other languages)

For Android Tablet: Settings - Language & Input - Physical Keyboard - Add the Correct Language layout - And it's best to select only language layout for the on-screen keyboard as well.

②If you’re using 2.4G on a Mac, switch to Bluetooth cause 2.4G will cause the keyboard acts as WINDOWS layout which may effect.