STMS 228 A1 - Keyboard SILVERCREST - Free user manual and instructions

Type of product	Keyboard
Brand	SilverCrest
Model	STMS 228 A1
Dimensions (approx.)	440 x 140 x 30 mm
Weight (approx.)	650 g
Power supply	USB (5 V, 100 mA) or 2× AAA batteries (depending on variant)
Connection type	Wired (USB-A) or Wireless (2.4 GHz with nano receiver)
Number of keys	104 (full QWERTY layout)
Multimedia keys	Yes (volume, playback, etc.)
Numeric keypad	Yes
Wrist rest	No
Backlight	No
Compatible operating systems	Windows, macOS, Linux, Android (with OTG)
Cable length (wired)	1.5 m
Battery life (wireless)	Approx. 12 months (typical usage)
Material	Plastic (ABS)
Color	Black
Cleaning instructions	Wipe with a soft, damp cloth; do not use solvents or immerse in water.
Safety precautions	Do not expose to liquids or extreme temperatures; unplug during cleaning.
Spare parts / reparability	Not user-serviceable; contact manufacturer for replacement.

Frequently Asked Questions - STMS 228 A1 SILVERCREST

Is the SilverCrest STMS 228 A1 keyboard wired or wireless?

The SilverCrest STMS 228 A1 is available in both wired and wireless variants. The wired version connects via USB-A, while the wireless version uses a 2.4 GHz nano receiver.

What are the dimensions of this keyboard?

Approximate dimensions are 440 x 140 x 30 mm (length x width x height).

Does the keyboard have a numeric keypad?

Yes, the STMS 228 A1 features a full-size layout with a dedicated numeric keypad for easy data entry.

How do I clean the keyboard?

Unplug the keyboard first. Use a soft, lint-free cloth slightly dampened with water. Avoid using alcohol, solvents, or abrasive cleaners. Do not let liquid enter the device.

Can I use this keyboard with a tablet or smartphone?

Yes, it works with Android devices supporting OTG (wired) or Bluetooth if your variant is wireless. For iOS, a Lightning to USB adapter may be required for wired models.

What is the warranty period for SilverCrest products?

Typically SilverCrest offers a 3-year warranty from the date of purchase. Keep your receipt as proof of purchase.

Does the keyboard have backlit keys?

No, the STMS 228 A1 does not include backlighting.

How long do the batteries last in the wireless version?

With normal use, the two AAA batteries can last approximately 12 months. Battery life may vary depending on usage.

Is the keyboard compatible with macOS?

Yes, it works with macOS. However, some multimedia keys may require additional configuration or differ from the Windows layout.

What should I do if a key stops working?

Check for debris under the keycap, gently remove it and clean. If the problem persists, the keyboard may need to be replaced as internal components are not user-repairable.

USER MANUAL STMS 228 A1 SILVERCREST

Includes wireless mouse and USB nano receiver

GB

Wireless Keyboard Includes wireless mouse and USB nano receiver

User manual and service information

HU

Black desktop computer keyboard and mouse with visible control buttons and ports (no text or symbols on main body)

English.... 2

Magyar.... 22

Čeština.... 42

Slovensky 62

Wireless keyboard with wireless mouse and USB nano receiver

STMS 22.8 A1

Package Contents

Black computer keyboard and mouse with labeled keys, shown alongside a separate image of a mouse (no text or symbols on the keys themselves)

A Wireless Keyboard STMS 22.8 A1-K
B Wireless Mouse STMS 22.8 A1-M
C USB nano receiver STMS 22.8 A1-R (inserted into the wireless mouse)
D 2 AAA-type batteries, 1.5V (Micro) for wireless keyboard (not illustrated)
E 1 AA-type battery, 1.5V (Mignon) for wireless mouse (not illustrated)
F CD-ROM with software (not shown)
G User's manual (not shown)

System Requirements

• Intel ^® Pentium ^® III / AMD Athlon ^TM or higher
• 1 free USB 2.0 port
• Microsoft ^® Windows ^® XP, Windows Vista ^® or Windows ^® 7
• CD-ROM or DVD-ROM Drive for installing the software

Overview

1 Special keys (hotkeys)
2 USB nano receiver (inserted into the wireless mouse)
3 Battery level indicator*
4 Volume control

* The LED on the keyboard front panel will light-up briefly when inserting the batteries.

5 800/1600 cpi toggle switch (press briefly)

Standard / media mode toggle switch

(keep pressed for 3 seconds)

6 Tilt wheel (4-way scroll wheel)

Volume control and mute (media mode)

7 Right mouse button

8 Left mouse button

9 Battery level indicator

10 Forward (default)

Next title (media mode)

11 Back (default)

Previous title (media mode)

12 Zoom + (default mode)

Launch Media Player (media mode)

13 Zoom - (default mode)

System Requirements .... 3

Overview....3

Important Safety Instructions....6

Children and Persons with Disabilities 6

Batteries....7

RF Interface 7

Operating Environment....7

Intended Use....8

Repair and Maintenance....8

Copyright....9

Storing When Not Using the Product....9

Conformity Notice 10

Disposal of Old Devices.... 10

Introduction....10

Installing the Hardware.... 11

Inserting the Batteries.... 11

Connecting the USB Nano Receiver 12

Installing the Software 13

Icons in the Task Bar 14

Configuring 15

Changing the Operating Mode.... 15

Configuring the Wireless Optical Mouse 16

Configuring the Wireless Keyboard 16

Appendix....19

Troubleshooting 19

Technical Specifications 20

Warranty Information 21

Important Safety Instructions

Before you use this device for the first time, please read the following notes in this manual and heed all warnings, even if you are familiar with handling electronic devices. Keep this manual safe for future reference. If you sell the device or pass it on, it is essential that you also hand over this manual.

This icon denotes important information for safe operation of the product and for the user's safety.

This icon alerts about a strong light source.

This icon denotes further information on the topic.

Avoid damage to your eyes!

Never look into the LED beam.

Children and Persons with Disabilities

Electrical devices do not belong in the hands of children. People with disabilities should only use electrical devices in appropriate circumstances. Do not allow children or persons with disabilities to use electrical devices when not under supervision. These may not comprehend the presence of potential risks. Batteries and small parts represent potential choking hazards. Keep the batteries in a safe place. If a battery is swallowed, seek medical help immediately. Keep the packaging away from children and persons with disabilities too as there is danger of suffocation.

Batteries

Insert the batteries with the correct polarity. Never try to recharge the batteries and under no circumstances throw them into fire. Do not mix battery types (old and new or carbon and alkaline, etc.). Remove the batteries when the device is not to be used for a long time. Improper use may cause explosions and danger to life.

RF Interface

Turn the device off when onboard an aircraft, in a hospital, in an operating theatre or in the vicinity of medical electronic equipment. The RF signals may interfere with the functionality of sensitive devices. Keep the device at least 20cm (8 inches) away from pacemakers, as the RF signals may interfere with the functionality of the pacemaker. The transmitted RF signals can cause interference with hearing aids. Do not place the device with the wireless adapter turned on near flammable gases or in a potentially explosive area (e.g. a paint shop), as the transmitted RF signals may cause explosions or fire. The range of the radio wave signals depends on environmental conditions. When data is transmitted via a wireless connection it may also be received by unauthorized parties. Targa GmbH is not liable for any interference caused to RF or TV signals through unauthorized modification to this device. Furthermore, Targa does not assume any liability for replacing any cables or devices that have not been specifically approved by Targa GmbH. The user is solely responsible and liable for troubleshooting any interference caused by unauthorized modification of this device and for replacing appliances.

Operating Environment

Position the device on a stable, flat surface and do not place any objects on the device. The device is not designed for use in environments with high temperatures or humidity (e.g. bathrooms), and must be kept free of dust. Operating temperature and operating humidity: 5 °C to 40 °C, max. 90% RH.

Always make sure that:

• no direct heat sources (e.g. radiators) can affect the device;
• the device is not exposed to direct sunlight or artificial light;
• contact with spray, dripping water and corrosive liquids is avoided and the device is never operated near water; in particular the device may never be immersed in liquids (do not place any objects containing liquids, such as vases or drinks, near the device);
• the device is never placed in the immediate vicinity of magnetic fields (e.g. loudspeakers);
• no fire hazards (e.g. burning candles) are placed on or near the device;
• no foreign bodies are introduced into the device;
• the device is not subject to extreme temperature changes.
• the device is not subject to excessive shocks and vibrations;

Intended Use

This Keyboard and Mouse Set, consisting of a wireless keyboard, wireless mouse and wireless receiver, is an IT device. The device may not be used outdoors or in tropical climates. This product has not been designed for corporate or commercial applications. Use the product in domestic environments for private applications only. Any use other than that mentioned above does not correspond to the intended use. This device fulfils all that relates to CE Conformity, relevant norms and standards. Any modifications to the device other than recommended changes by the manufacturer may result in these standards no longer being met. The manufacturer is not liable for any damage or interference caused by unauthorized modifications. Only use the accessories recommended by the manufacturer.

If you are not using the device within the Republic of Germany, you must observe the regulations and laws in the country of use.

Repair and Maintenance

Repairs are required when this device has been damaged in any way, for example when liquid has entered the product, when the product has been exposed to rain or moisture, when the product does not work normally or if the product has been dropped. If smoke, unusual noises or smells are noticed, switch off the device immediately. In these cases the device should no longer be used and should be inspected by authorized service personnel. Please contact qualified personnel when repair is needed. Never open the

housing of the device, or the accessories. Only use a clean, dry cloth for cleaning. Never use any corrosive liquids.

Copyright

The entire content of this User's Manual is copyrighted and is provided to the reader for information purposes only. Copying data and information without prior written and explicit authorization from the author is strictly forbidden. This also applies to any commercial use of the contents and information. All texts and figures are up-to-date as per the date of print release. We assume no liability for any changes.

Storing When Not Using the Product

When leaving unused for a long period of time, remove the batteries from the wireless keyboard and from the wireless mouse. Remove the USB nano receiver from your computer's USB port and insert it into the storage compartment of the mouse. Please note that the USB nano receiver fits into the storage compartment in only one direction, without the need to apply any force. Also make sure that the storage temperature is maintained between 5°C and 40°C. Humidity must not exceed 90% RH.

Conformity Notice

The mouse and keyboard set complies with the basic and other relevant requirements of the R&TTE Directive 1999/5/EC. The corresponding Declaration of Conformity can be found at the end of this User's Manual.

Disposal of Old Devices

Symbol of a trash bin with crossed-out lanes and a blank rectangular base (no text or numbers)

Devices marked with this symbol are subject to European Directive 2002/96/EC. All electric and electronic devices must be disposed of separately from household waste at official disposal centres. Also the USB nano receiver is an electronics device and needs to be disposed of properly. Avoid hazards to the environment and dangers to your personal health by disposing of the device properly. For further information about proper disposal, contact your local government, disposal bodies or the shop where you bought the device.

Respect the environment. Old batteries do not belong in the domestic waste. They must be handed in to a collection point for waste batteries.

Recycle the packaging material properly too. Cardboard packaging can be taken to paper recycling containers or public collection points for recycling. Any film or plastic contained in the packaging should be taken to your public collection points for disposal.

Introduction

Thank you for purchasing this wireless keyboard with wireless mouse STMS 22.8 A1. The devices feature a SmartLink technology that makes any manual synchronisation obsolete. The multiple function buttons of the devices let you customise the mouse and keyboard according to your needs. The mouse features a tilt wheel (4-way scroll wheel) to allow horizontal scrolling besides the usual vertical scrolling.

Installing the Hardware

Unpack all the devices and use the package contents checklist on page 2 to verify that you have received all items listed.

Inserting the Batteries

First insert the batteries into the wireless mouse and wireless keyboard, as shown in the figures below. Take care to insert the batteries into the device observing the correct polarity (+ and −) then press the On/Off button (15) to power the wireless mouse on. The wireless mouse features a battery level indicator (9) on its top panel. If it blinks orange, the battery is empty.

Fig.: Detailed view of bottom of the keyboard

Fig.: Detailed view of bottom of the mouse

14 Keyboard battery compartment
15 On/off button of the mouse
16 Optical sensor
17 Mouse battery compartment
18 USB nano receiver

The wireless mouse features an automatic standby function. When not using the wireless mouse for a certain amount of time, it will power off. Move the wireless mouse or press any mouse button to power it back on (the drivers must be installed).

The devices feature a battery level indicator (3 and 9). Whenever it blinks, the batteries of the respective device are exhausted. When this happens, replace the batteries with new batteries of the same type.

Connecting the USB Nano Receiver

If you still have your old keyboard and mouse connected to the computer, please shut down your computer, disconnect the corresponding devices from the PC and restart the computer.

Plug the USB nano receiver (inserted into the wireless mouse) into a free USB port on your powered-on computer.

Close-up of a black rectangular electronic component with a white internal line (no visible text or symbols)

Fig.: USB nano receiver

The operating system will detect the new hardware and will automatically install the corresponding drivers. Depending on the operating system, one of the following messages will appear:

Under Windows Vista ^® , Windows ^® 7

When connecting the receiver for the first time, the operating system will prompt "Installing device driver software". Wait until the message "Your devices are ready to use" appears. Your mouse and keyboard have been successfully configured and can now be used.

Under Windows ^® XP

When connecting the receiver for the first time, the operating system will prompt "Found New Hardware". Wait until the message "Your new hardware is installed and ready to use" appears before using the mouse and keyboard.

If the connection to the nano receiver is interrupted or if it is not possible to establish a connection, remove the batteries from the mouse and keyboard and re-insert them.

Installing the Software

In order to be able to use the full function-capabilities of your wireless keyboard and wireless mouse, you must install the supplied software. To do this, insert the supplied CD-ROM into the CD-ROM drive of your computer. The setup process should start automatically, otherwise double-click on the "SilverCrest STMS 22.8 A1 Driver Setup V1.0.exe" file on the CD-ROM to start manually.

Under Windows Vista® and Windows® 7 only the setup will be temporarily blocked and a message "Do you want to allow the following program from an unknown publisher to make changes to this computer?" appears. To continue setup, click "Yes".

The following setup screens correspond to the Windows ^® 7 operating system. For Windows ^® XP / Windows Vista ^® these screens will slightly vary but their content is the same.

To launch setup, click "Next".

Here you can select the destination folder for the installation with the "Change" button or use the suggested folder. To proceed click "Next".

Click "Finish" to finish the setup programme.

If you are prompted to restart your computer, restart it before using the software.

Icons in the Task Bar

Double-clicking on this icon opens the configuration menu for the optical mouse (See page 16 - Configuring the Wireless Optical Mouse for details).

Double-clicking on this icon opens the configuration menu for the keyboard (See page 16 - Configuring the Wireless Keyboard for details).

This icon indicates that the function "Num Lock" is enabled. Clicking again on the "Num Lock" button will disable this function again.

This icon indicates that the function "Caps Lock" is enabled. Clicking again on the "Caps Lock" button will disable this function again.

This icon indicates that the function "Scroll Lock" is enabled. Clicking again on the "Scroll Lock" button will disable this function again.

Right-click on the corresponding icon to open a menu showing the following options:

Open Opens the configuration menu of the corresponding device.

Info Shows information about the version of the installed driver.

Exit Exits the function. If necessary, you can open the applications again from the Start menu of your operating system.

The operating systems default settings will hide disabled icons in the task bar. It is recommended that you disable the "Hide inactive icons" option in task bar properties.

Configuring

Changing the Operating Mode

Use the CPI button (5) to quickly toggle between 800 cpi and 1600 cpi resolution for optical tracking. Tracking at 1600 cpi offers a higher accuracy.

To toggle between standard and media operating mode of your optical mouse, press and hold the CPI button (5) for at least 3 seconds until the charge indicator (9) blinks briefly. The available functions for media mode can be found on page 4 – Overview. In media operating mode you can press the tilt wheel (6) to the left or right to adjust the sound volume. In standard operating mode you can press the tilt wheel (6) to the left or right or turn the wheel to adjust the Windows sound volume, whenever the volume icon is enabled in the system bar.

Configuring the Wireless Optical Mouse

Double-click on the icon in the task bar (lower-right corner on your screen, near the system clock) or right-click on the icon and select "Open" from the context menu. The mouse configuration menu will appear.

Here you can assign a function for the highlighted mouse buttons. Click on the radio button corresponding to the mouse button and select the desired function from the menu.

By using "Restore to default" you can return all settings to factory default.

All selected options apply to the default mode. The button assignments for media mode cannot be modified.

Enable changes by clicking the "Apply" button (the window remains open) or by clicking on the "OK" button (the window closes).

Click the “About Mouse Driver” tab to display information about the mouse driver. As all other tabs are provided by your operating system, please read the corresponding OS documentation or online help for more information

Configuring the Wireless Keyboard

The wireless keyboard features 22 hotkeys (quick access keys) plus a volume adjustment button. Once the software has been installed, the function keys have the following default assignments. Additionally, there are 19 programmable functions keys.

Hotkey Description

	Default Internet Browser (e.g. Internet Explorer)
	Default E-mail programme (e.g. Microsoft® Outlook)
	Internet Browser favourites
	Next (e.g. Internet Explorer)
	Previous (e.g. Internet Explorer)
	Refresh page
	Search for ...
	Launch the Calculator
	Opens My Computer
	Computer On/Off *
	Many computer mainboards have a BIOS setting such as "Boot on USB", "Power on by USB", or similar. Enable this function to be able to power the computer on or off via the keyboard. Please also read the documentation for your computer or motherboard in order to adjust the BIOS setup.
	Switch to Hibernation or Standby mode *
	Resume from Hibernation mode *
	Launch the default media player (e.g. Microsoft® Media Player)
	Playback/Pause
	Stops playback
	Previous title
	Next title
	Mute on/off
	Launches Microsoft® Word (must have been installed)
	Launches Microsoft® Excel (must have been installed)
	Launches Microsoft® PowerPoint (must have been installed)
	Launches the default calendar (e.g. Microsoft® Outlook, must have been installed)

*not programmable

In order to program the programmable function keys, double-click on the icon in the task bar (lower-right corner of your screen, near the system clock) or right-click on the icon and select "Open" from the context menu.

The following menu will appear:

Here you can assign a function for the highlighted keyboard keys. Click on the radio button corresponding to the special function key and select the desired function from the menu.

The following option "Select a program to run" ([ ... ] button) lets you select any executable file on the hard disk of your computer which will be run by pressing the corresponding function button.

To do this, click the [ ... ] button next to the desired function button. The program browse dialog box will open. Browse for the desired executable file and confirm the settings. This procedure depends on the operating system.

Enable changes by clicking the "Apply" button (the window remains open) or by clicking on the "OK" button (the window closes).

By using the "Restore All To Default" you can return all modified functions to factory default.

Click the "About Keyboard Driver" tab to display information about the keyboard driver. As all other tabs are provided by your operating system, please read the corresponding OS documentation or online help for more information.

Appendix

Troubleshooting

If after installation the wireless keyboard and the wireless mouse do not respond, please test the following:

☑ Check the polarity of the batteries.
☑ Check that the receiver unit has been connected properly to your computer (see page 12 - Connecting the USB Nano Receiver).
☑ Try a different USB port.
☑ Please note that when using multiple sets the different components such as the wireless mouse, wireless keyboard and USB nano receiver cannot be swapped.
☑ Check the charging level of the batteries (if necessary, insert new batteries).
☑ Please note that you should use a pad (e.g. mouse pad) when using the mouse on a glass or glossy surface.

If the icons for "Num Lock", "Caps Lock" and/or "Scroll Lock" do not appear in the task bar, please try the following:

☑ Check the taskbar settings to see if inactive icons are hidden. Disable this function to show all icons at all times.

Technical Specifications

• 2.4 GHz radio frequency
• SmartLink technology (no more need to establish connections between receiver and keyboard/mouse)
• Range up to 5 m (15 feet)

Keyboard

• 22 function keys (hotkeys), of which 19 are programmable
• Volume adjustment dial knob
• 47.4 x 16.8 x 2.6 cm (L x W x H)
• 616 g (without batteries)
• 2 batteries type AAA, 1.5 V (Micro)

Mouse

• Optical sensor with selectable resolution between 800 cpi and 1600 cpi, LED Class 1
• 8 hotkeys, of which 7 are programmable
• Tilt Wheel (4-way scroll wheel)
• 10.8 x 7.0 x 4.0 cm (L x W x H)
• 73 g (without battery)
• 1 Battery type AA, 1.5 V

USB nano receiver

• 1.5 x 0.7 x 1.8 cm (L x W x H)
• 2 g

Warranty Information

36 month warranty from date of purchase

Please read the enclosed documentation or online help carefully before using the product for the first time. If there is a problem which can not be solved in this way, please contact our hotline.

If we are unable to solve the problem over the telephone, our hotline will arrange a further service dependant on the cause of the problem. This will comprise the elimination of production and material defects free of charge.

This warranty is valid in the United Kingdom / Ireland / Malta / Cyprus.

Please note that the warranty period for rechargeable batteries is 12 months. Consumables such as batteries and bulbs are excluded from this warranty.

Your statutory guarantees from the seller are in addition to this warranty and are not limited by it.

Hotline:

UK	0207 - 36 50 744
IE	01 - 242 15 83
MT	800 - 62 175
CY	800 - 92 496

Please have your EAN / serial number ready

Manufacturer:

TARGA GmbH

Postfach 22 44

D-59482 Soest

www.targa.de

Black computer keyboard with various function keys and a separate black mouse (no visible text or symbols)

Close-up of a computer RAM module with two batteries and a labeled pin (no text or symbols beyond basic markings)

Close-up of a black plastic clip with a white line on its side (no text or symbols visible)

Ábra: USB nanovevő

Black computer keyboard and mouse with labeled buttons, shown alongside a separate image of the mouse (no text or symbols on main components)

Icons in the Task Bar 54

Konfigurace.... 55

Close-up of a black electronic component with a white internal line (no visible text or symbols)

Installing the Software

Icons in the Task Bar

Configuring the Wireless Optical Mouse

Black computer keyboard with control buttons and a separate black mouse (no visible text or symbols)

Symbol of a trash bin crossed with no visible text or labels

Close-up of a black electronic component with a white outline and a small protrusion (no visible text or symbols)