SK-053TM Manual

1. Basic Function

This document provides instructions for the SK-053TM, a 3-channel Bluetooth + 2.4G + Wired illuminated mechanical keyboard.

1.1 Connectivity Modes

• Bluetooth Mode: To connect via Bluetooth, press FN + PGDN (for BT1) or FN + END (for BT2). The LED indicator under the respective button will flash slowly for approximately 3-5 seconds and then turn off once connected.
• 2.4G Mode: Connect the included nano receiver to a USB port. Then, press FN + PGUP to activate 2.4G mode. The LED indicator under the PGUP button will flash slowly for 3-5 seconds and turn off upon connection.
• Wired Mode: Connect the keyboard using the provided USB cable. Press FN + HOME to activate wired mode. The LED indicator under the HOME button will flash slowly for 3-5 seconds and turn off upon connection.

Bluetooth Pairing: When in Bluetooth mode, press FN + PGDN (BT1) or FN + END (BT2) for about 3 seconds to initiate pairing. The white LED will flash quickly for up to 3 minutes while searching. Connect to the device named "K840T Keyboard BT" from your Bluetooth settings.

1.2 System Switching (Bluetooth Mode)

Under Bluetooth mode, press FN + Q, FN + W, or FN + E to switch between Android, Windows, and iOS systems, respectively.

1.3 Hotkey Functions

The following table details the hotkey functions available when pressing the FN key in combination with the F1-F12 keys. FN + W is the default setting for Windows.

Note: For specific codes (e.g., PrtSc, Scrlk, Pause), a long press of FN + [Code Key] (indicated by white light slow flash) activates the function, while a short press is used for channel switching.

1.4 On/Off Switch

Press the switch to the ON position for operation in 2.4G or Bluetooth mode.

1.5 2.4G Nano Receiver Location

The 2.4G nano receiver is stored in a compartment on the bottom case of the keyboard.

1.6 Compatible Systems (Bluetooth Mode)

• Windows: Windows 8.0 or later
• macOS: iOS 10.10 or later
• Android: Android 4.3 or later

The keyboard is also compatible with Windows XP/Vista/7/8/10 systems when used in wired or 2.4G mode.

1.7 LED Indicators

• ? : CAPS LOCK Indicator (White LED)
• ? : WIN LOCK Indicator
• ? : Gaming Mode Indicator (White LED)
• ? : Low battery indicator (White LED flashes slowly)

Press FN + [Key] to activate gaming mode. When the gaming mode indicator is lit, certain keys may have no function.

1.8 Keyboard Dimensions and Weight

• Size: 351.6mm x 134.6mm x 36.8mm (±0.2mm)
• Weight: 725g (±10g)

2. Illumination Control

This section details the keyboard's lighting features, including standard gaming backlights, custom backlight functions, and various LED lighting effects.

2.1 Standard Gaming Backlight & Custom Backlight Function

• Standard Gaming Lighting: Use FN + 1 through FN + 8 for fixed gaming lighting effects.
• Custom Setting: Use FN + 9 or FN + 0 to access custom lighting settings.

2.2 LED Lighting Effects

The keyboard supports a variety of LED lighting effects, with a standard mode offering 16 distinct lighting modes.

• Wired Mode: Supports 6-key rollover and N-key rollover. E-banking password entry is not affected. Backlight turns off when the computer enters sleep or standby mode, and turns ON when the computer starts.
• 2.4G or Bluetooth Mode: Backlight turns off after 1 minute of keyboard inactivity. Press any key to turn the backlight back ON.

2.3 Backlight Control

Clear Lighting Record: Press and hold FN + SPACE for 3 seconds to clear lighting records and restore the default lighting mode.

Backlit Modes Selection (FN + PRTSCRN)

FN + PRTSCRN is used to select among 16 illumination modes.

Mode 1: All Keys Backlit-On Mode (Default)

• Adjust brightness: Press FN + ↑ / ↓ for 5 levels of brightness adjustment.

Mode 2: Breathing Rhythm

The overall backlight simulates a breathing rhythm, with brightness changing from off to maximum. Brightness and respiration rate are subject to previous memory settings.

• Adjust brightness: Press FN + ↑ / ↓ for 5 levels of brightness adjustment.
• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 3: Default Lightening with Delayed Key Response

The default backlight is on. When a button is pressed, its corresponding LED turns off. After releasing the button, the backlight illuminates with a delay.

• Adjust brightness: Press FN + ↑ / ↓ for 5 levels of brightness adjustment.
• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 4: Sparkling Water Effect

The backlight moves from left to right, simulating sparkling water.

• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 5: Center Spread Effect

The keyboard backlight brightness spreads outwards from the center, with a focus around the "P" key area.

• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 6: Wave Flow Effect (Left to Right)

Keyboard backlight brightness flows from left to right, like a constantly surging wave.

• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 7: Wave Gathering Effect (Center to Edges)

Keyboard backlight brightness gradually gathers from the center to the left and right, like a constantly surging wave.

• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 8: Scattered Light Waves

The overall backlight is turned off. Each time a button is pressed, two light waves scatter outwards from the button.

• Adjust brightness: Press FN + ↑ / ↓ for 5 levels of brightness adjustment.
• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 9: Key Press Reactive Lighting

The backlight is off by default. Each time a key is pressed, a line of keys lights up.

• Adjust brightness: Press FN + ↑ / ↓ for 5 levels of brightness adjustment.
• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 10: Button Press Highlight

The default backlight is off. When a button is pressed, its corresponding LED lights up. After releasing the button, the backlight turns off.

• Adjust brightness: Press FN + ↑ / ↓ for 5 levels of brightness adjustment.
• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 11: Reactive Spread Lighting

The default backlight is on. When a button is pressed, its LED turns off and spreads to the whole keyboard, after which the backlight turns ON again.

• Adjust brightness: Press FN + ↑ / ↓ for 5 levels of brightness adjustment.
• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 12: ESC to Keycap Sweep

The backlight runs sequentially from the ESC key to all other keycaps.

• Adjust brightness: Press FN + ↑ / ↓ for 5 levels of brightness adjustment.
• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 13: Blinking Star Effect

The backlight blinks like stars. The blinking speed and quantity can be adjusted by the user.

• Adjust brightness: Press FN + ↑ / ↓ for 5 levels of brightness adjustment.
• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 14: Two-Line Running Effect

The backlight runs to and fro, separated by two lines.

• Adjust brightness: Press FN + ↑ / ↓ for 5 levels of brightness adjustment.
• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 15: Corner to Corner Sweep

The backlight runs from the upper left corner to the right corner, then from the upper right corner to the whole keyboard.

• Adjust brightness: Press FN + ↑ / ↓ for 5 levels of brightness adjustment.
• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

Mode 16: Flying Wave Effect

The keyboard background is LED off, with a colorful light wave flying upwards.

• Adjust brightness: Press FN + ↑ / ↓ for 5 levels of brightness adjustment.
• Adjust breathing speed: Press FN + ← / → for 4 levels of breathing speed.

2.4 Game Mode and Key Custom Settings

This section outlines predefined game modes and custom lighting settings.

Predefined Game Modes:

• Game mode 1 (FPS): FN + 1 = ASDW ↑↓←→ ESC light.
• Game mode 2 (CF): FN + 2 = ASDW Ctrl Shift Alt Space RGQEB 1-5 Tab F1-F3 PGUP PGDN Home End PrtSc Scroll lock light.
• Game mode 3 (COD): FN + 3 = QWERTASDFGCV 1-7 Ctrl Shift light.
• Game mode 4 (RTS): FN + 4 = QWERTYUPASDFGHKLZXNM Space 1-8,9-0 Ctrl Shift Alt light.
• Game mode 5 (LOL): FN + 5 = QWERDFGVB Ctrl Alt Tab Space ~ 1-6 Esc light.
• Game mode 6 (Car Race): FN + 6 = WRASD ↑↓←→ Ctrl Shift Alt light.
• Game mode 7 (NBA): FN + 7 = WERASFZXCV Ctrl Shift Alt Space ↑↓←→ 1234 light.
• Game mode 8 (LOL): FN + 8 = QWERDFB 1-6 light.
• Game mode 9 (Self Design): FN + 9 = Custom lighting.
• Game mode 10 (Self Design): FN + 0 = Custom lighting.

2.5 Light Custom Settings

• Record/Save: Press FN + INSERT to start recording. Press FN + DELETE to save the custom lighting settings.
• Enter Custom Mode: Press FN + 9 or FN + 0 to enter the corresponding custom mode.
• Activate/Deactivate Custom State: Press any key to turn the specified state ON or OFF.
• Restore Default Lighting: Press FN + ESC to clear light recording and restore the default lighting mode.

3. FCC Warning Statement

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.