User Guide
Wireless Charger DT-904
Issue 2.0 EN
User Guide
Wireless Charger DT-904
For your safety
About your accessory
Keys and parts
Charge your phone
Get notifications
About Bluetooth connectivity
Indicator lights and multifunction
key actions
Product and safety info
Copyrights and other notices
© 2015 Microsoft Mobile. All rights reserved.
For your safety
Read these simple guidelines. Not following them may be dangerous or against local laws and
All wireless devices may be susceptible to interference, which could affect performance.
Only qualified personnel may install or repair this product.
Use only batteries, chargers, and other accessories approved by Microsoft Mobile for
use with this device. Do not connect incompatible products.
Your device is not water-resistant. Keep it dry.
© 2015 Microsoft Mobile. All rights reserved.
About your accessory
With the Wireless Charger DT-904, you can charge the battery of your phone without
connecting any cables to your phone. Your wireless charging plate can also let you know, for
example, when the battery on your phone is running low, or when you’ve missed a call or you
have unread messages.
Your wireless charging plate is compliant with the Qi standard.
You need a USB charger with at least 1.5A output.
The smart features of the device, such as alerts on low battery level or missed calls, are
compatible with Lumia phones running Lumia Denim (Windows Phone 8.1 Update 1) or later,
Gadgets 4.1 or later, and Bluetooth 4.0 or later. NFC works with Lumia phones supporting
For more info on operation and safety, see the user guide of your phone or other device.
© 2015 Microsoft Mobile. All rights reserved.
Keys and parts
Get to know your wireless charging plate.
USB connector
Charging area for charging the
NFC area
Multifunction key
Charging and notification
indicator light
The surface of this product is nickelfree.
Some of the accessories mentioned in
this user guide, such as charger,
headset, or data cable, may be sold
© 2015 Microsoft Mobile. All rights reserved.
Charge your phone
It’s simple: place your phone or another Qi-compatible device on the charging plate to start
1. Connect the USB cable of your charging plate to a compatible charger plugged into a wall
outlet, or to a suitable USB power source.
2. Make sure the charging plate is facing up and there's nothing on the plate.
3. Place your phone on the charging plate. The indicator light is on while the phone charges,
and fades out when the battery is full.
It's normal for the charging plate and phone to get warm while charging. If there’s a problem
with the charging, the indicator light flashes quickly.
© 2015 Microsoft Mobile. All rights reserved.
Get notifications
To get notified about a low charging level on your phone, missed calls or messages, and more,
pair your charging plate with your phone using NFC or Bluetooth.
Make sure your charging plate is connected to a power source.
For more info on how to switch NFC or Bluetooth on, see your phone's user guide.
1. When using NFC, touch the NFC areas of your charging plate and phone together.
When using Bluetooth, depending on your phone, tap Settings > Devices > Bluetooth or
Settings > Bluetooth, and select your charging plate.
2. If asked, tap pair.
3. In your phone’s apps menu, tap Gadgets, select your charging plate, and tap Customise.
Then choose how you want your charging plate to notify you.
To adjust the indicator light brightness, or to dismiss a notification, press the multifunction
key. To clear the Bluetooth pairing, press the multifunction key for more than 8 seconds.
© 2015 Microsoft Mobile. All rights reserved.
About Bluetooth connectivity
You can use Bluetooth to connect wirelessly to other compatible devices, such as mobile
The devices don't have to be in direct line of sight, but they must be within 10 metres (33 feet)
of each other. The connection may be affected by obstructions such as walls or other electronic
This device is compliant with Bluetooth Specification 4.0. Check with the manufacturers of
other devices to determine their compatibility with this device.
© 2015 Microsoft Mobile. All rights reserved.
Indicator lights and multifunction key actions
Wonder what the different lights on your charging plate mean or what the multifunction key
Indicator light patterns
The battery of your phone or other device is
fully charged
Flashing quickly
Charging error, or the connected power
source is not able to provide enough power
Flashing twice repeatedly
Flashing slowly
The battery of the phone connected to the
charging plate is low
Multifunction key actions
Press once
Adjust the indicator light brightness, or
dismiss a notification
Press for more than 8 seconds
Empty the list of paired devices
© 2015 Microsoft Mobile. All rights reserved.
Product and safety info
Take care of your device
Handle your device, charger and accessories with care. The following suggestions help you keep your device operational.
Keep the device dry. Precipitation, humidity, and all types of liquids or moisture can contain minerals that corrode
electronic circuits. If your device gets wet, let the device dry.
Use the charger for intended purposes only. Improper use, or use of incompatible chargers may present a risk of
fire, explosion, or other hazard. Never use a damaged charger.
Do not attempt to charge a device having a damaged, cracked or open battery case or a device that is not
compatible with Qi.
Do not use or store the device in dusty or dirty areas.
Do not store the device in high temperatures. High temperatures may damage the device.
Do not store the device in cold temperatures. When the device warms to its normal temperature, moisture can
form inside the device and damage it.
Do not open the device.
Unauthorised modifications may damage the device and violate regulations governing radio devices.
Do not drop, knock, or shake the device or the battery. Rough handling can break it.
Only use a soft, clean, dry cloth to clean the surface of the device.
During extended operation, the device may feel warm. In most cases, this is normal. If the device is not working properly,
take it to the nearest authorised service facility.
Always return your used electronic products, batteries, and packaging materials to dedicated collection points. This
way you help prevent uncontrolled waste disposal and promote the recycling of materials. All materials of the device
can be recovered as materials and energy. Check how to recycle your products at
Crossed-out wheeled-bin symbol
The crossed-out wheeled-bin symbol on your product, battery, literature, or packaging reminds you that all electrical
and electronic products and batteries must be taken to separate collection at the end of their working life. Do not
dispose of these products as unsorted municipal waste: take them for recycling. For info on your nearest recycling point,
check with your local waste authority, or go to For more info on the
environmental attributes of your device, see
Battery and charger info
Microsoft Mobile may make additional battery or charger models available for this device.
Implanted medical devices
To avoid potential interference, manufacturers of implanted medical devices recommend a minimum separation of 15.3
centimetres (6 inches) between a wireless device and the medical device. Persons who have such devices should:
Always keep the wireless device more than 15.3 centimetres (6 inches) from the medical device.
Not carry the wireless device in a breast pocket.
Switch the wireless device off if there is any reason to suspect that interference is taking place.
© 2015 Microsoft Mobile. All rights reserved.
Follow the manufacturer directions for the implanted medical device.
If you have any questions about using your wireless device with an implanted medical device, consult your health care
Copyrights and other notices
Declaration of Conformity
Hereby, Microsoft Mobile Oy declares that this DT-904 product is in compliance with the essential requirements and
other relevant provisions of Directive 1999/5/EC. A copy of the Declaration of Conformity can be found at
The availability of products may vary by region. For more info, contact your dealer. This device may contain commodities,
technology or software subject to export laws and regulations from the US and other countries. Diversion contrary to
law is prohibited.
The contents of this document are provided "as is". Except as required by applicable law, no warranties of any kind,
either express or implied, including, but not limited to, the implied warranties of merchantability and fitness for a
particular purpose, are made in relation to the accuracy, reliability or contents of this document. Microsoft Mobile
reserves the right to revise this document or withdraw it at any time without prior notice.
To the maximum extent permitted by applicable law, under no circumstances shall Microsoft Mobile or any of its
licensors be responsible for any loss of data or income or any special, incidental, consequential or indirect damages
howsoever caused.
Reproduction, transfer or distribution of part or all of the contents in this document in any form without the prior written
permission of Microsoft Mobile is prohibited. Microsoft Mobile operates a policy of continuous development. Microsoft
Mobile reserves the right to make changes and improvements to any of the products described in this document without
prior notice.
FCC/Industry Canada notice
This device complies with part 15 of the FCC rules and Industry Canada licence-exempt RSS standard(s). 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. For more info, go to Any changes or modifications not expressly approved by Microsoft
Mobile could void the user's authority to operate this equipment.
Note: 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.
NOTE: FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna
or transmitter.
The Bluetooth word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks by Microsoft
Mobile is under license.
The ‘Qi’ symbol is a trademark of the Wireless Power Consortium.
© 2015 Microsoft Mobile. All rights reserved.
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