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This User Manual covers setup, features, and safety information for the Satechi Slim X3 Bluetooth Backlit Keyboard (ST-BTSX3M / ST-BTSX3S).

Specifications

Model: ST-BTSX3M / ST-BTSX3S
Charging Power: 0.0 to 2.5 W
Power Adapter: Not included

Functions

1. On/Off Switch: Move the switch on the top of the device to the "on" position to turn the keyboard on.
2. Power/Charging LED Indicator: Shows power, low battery, charging, and fully charged status (see LED Indicators below).
3. Fn Lock LED Indicator: The white LED gets brighter when Fn Lock is enabled.
4. Bluetooth Device Keys with LED Indicator: Keys 1, 2, 3, and 4. Press and hold for 3 seconds to pair a device; quickly press to switch between paired devices.
5. Fn Key: Press Fn + Esc to swap between Media keys and F-Keys (F1 to F15).
6. USB-C Charging Port: Connect the included USB-C charging cable here to charge the keyboard.
7. Media / Function Keys: See the Hot Key Function Guide below.
8. Caps Lock LED Indicator
9. Numberpad

Note: The keyboard layout function is based on iOS and macOS default settings. The output might differ for different OS.

Setup

Powering On / Off

To turn the keyboard on, move the switch on the top of the device to the "on" position. The power indicator turns green for 3 seconds, and then turns off. Move the switch to the "off" position to turn it off.

Pairing Your Devices

The Slim X3 can be paired with up to 4 Bluetooth devices.

1. Press and hold one of the Bluetooth Keys (1, 2, 3, or 4) for 3 seconds to assign a device to it. The white LED will start blinking.
2. On your host device, open Bluetooth settings and look for "Slim X3 Keyboard". Choose "Connect" to pair.
3. The white LED will stop blinking when pairing is successful. Repeat the process to add up to 4 Bluetooth devices.

Switch between paired devices: Quickly press 1, 2, 3, or 4 to switch between paired devices.

Note: After 30 minutes of non-operation, the keyboard goes to sleep mode. Press any key to wake it up. For F1 to F15, press Fn + Esc to enable the functions.

Windows 10: Pair through Control Panel, not Bluetooth Settings.

Wired Mode

The Slim X3 also supports USB wired connectivity. Press Fn + Eject to activate wired mode when the USB-C cable is connected. The power LED turns green. Press Bluetooth key 1, 2, 3, or 4 to switch back to Bluetooth mode.

Charging Your Keyboard

When the battery is low, the power indicator will flash green. Connect the keyboard to a computer or USB-C wall adapter using the included USB-C charging cable. Charge for 2 to 3 hours, or until the red charging LED turns green. The keyboard can be used wired or wirelessly while charging.

Battery life: Battery life varies with backlight brightness. The longest the keyboard can last on a full charge is approximately 80 hours.

LED Indicators

Power/Charging LED:
On/Off: turns green for 4 seconds, then turns off.
Low Battery: flashes green.
Charging: turns red.
Fully Charged: turns green and stays green.

Fn Lock LED: Press Fn + Esc to swap between Media keys and F-Keys. The white LED gets brighter when Fn Lock is enabled.

Backlight

There are 10 backlight levels. Change the backlight level at any time:
F5: Decrease keyboard backlight
F6: Increase keyboard backlight

The keyboard has a white backlight only. The backlight dims automatically after 1 minute of inactivity and turns off after 3 minutes of inactivity. Press any key to wake the keyboard. The backlight also turns off automatically when the battery is low (low-power mode, shown by a flashing green LED).

Hot Key Function Guide

Safety Instructions

Warning: Fire, electric shock, or damage to the keyboard could occur if the following instructions are not obeyed.

1. Keep away from microwave radiation sources.
2. Do not place heavy objects on this product.
3. Do not drop or bend the keyboard.
4. Keep away from oil, chemicals, or organic solvents.

RF exposure: This equipment should be installed and operated with a minimum distance of 20 cm between the radiator and your body.

Certifications

FCC, CE, ISED (IC: 24917-STBTSX)