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Quick-Start Guide
To view manuals, FAQs, videos, drivers, downloads, technical drawings, and more, visit www.startech.com/support.
Product Diagram (ST121WHDLR)
Note: The above image represents both Transmitter and Receiver. The ports are
located in the same position on both the Transmitter and Receiver.
Port/Button/LED/Part Function
Transmitter
1
Pairing/Channel
Button
• Pairing: Used to pair devices to the Wireless
Transmitter.
Note: Press and hold for 5 seconds.
• Channel: For better transmission, use the Channel
Button to use another channel.
2 Network LED • Solid red indicates that the network is connected.
3 Video LED
• Solid blue indicates that the Display Device is
connected.
4 IR OUT Port • Connect an IR Blaster to transmit an IR signal.
HDMI over Wireless Extender |1080p | 200 m
4
5 USB Port
• Used for rmware updates.
Note: For future rmware updates refer to the
rmware section on the Product Support tab www.
startech.com/ST121WHDLR.
6 DC 5V Port • Powers the Wireless Extender.
7 HDMI IN Port
• Connects the Video Source Device to the
Wireless Extender.
8 IR Blaster • Used to transmit an infrared signal.
Receiver
1
Pairing/Channel
Button
• Pairing: Used to pair devices to the Wireless
Receiver.
Note: Press and hold for 5 seconds.
• Channel: For better transmission, use the Channel
Button to use another channel.
2 Network LED • Solid red indicates that the network is connected.
3 Video LED
• Solid blue indicates that the Display Device is
connected.
4 IR IN Port • Connect an IR Receiver to receive an IR signal.
5 USB Port
• Used for rmware updates
Note: For future rmware updates refer to the
rmware section on the Product Support tab www.
startech.com/ST121WHDLR.
6 DC 5V Port • Powers the Wireless Extender.
7 HDMI OUT Port
• Connects the Display Device to the Wireless
Extender.
8 IR Receiver • Used to receive an infrared signal.
Requirements
For the latest requirements, please visit www.startech.com/ST121WHDLR.
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FCC Compliance Statement
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 o 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 dierent 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. Changes or modications not expressly approved by StarTech.com could void
the user’s authority to operate the equipment.
FCC ID: Y3H706120181227
Industry Canada Statement
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe [B] est conforme à la norme NMB-003 du Canada.
CAN ICES-3 (B)/NMB-3(B)
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions:
(1) This device may not cause interference, and (2) This device must accept any interference, including interference that may
cause undesired operation of the device.
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence. L’exploitation
est autorisée aux deux conditions suivantes:
(1) l’appareil ne doit pas produire de brouillage, et (2) l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi,
même si le brouillage est susceptible d’en compromettre le fonctionnement.
IC ID: 11232A-7061
IC Radiation Exposure Statement
This equipment complies with IC RSS-247 radiation exposure limit set forth for an uncontrolled environment. This equipment
should be installed and operated with minimum distance 0.5cm
between the radiator and your body.
Use of Trademarks, Registered Trademarks, and other Protected Names and Symbols
This manual may make reference to trademarks, registered trademarks, and other protected names and/or symbols of thirdparty companies not related in any way to StarTech.com. Where they occur these references are for illustrative purposes only
and do not represent an endorsement of a product or service by StarTech.com, or an endorsement of the product(s) to which
this manual applies by the third-party company in question. StarTech.com hereby acknowledges that all trademarks, registered
trademarks, service marks, and other protected names and/or symbols contained in this manual and related documents are the
property of their respective holders.
Warranty Information
This product is backed by a two-year warranty.
For further information on product warranty terms and conditions, please refer to www.startech.com/warranty.
Limitation of Liability
In no event shall the liability of StarTech.com Ltd. and StarTech.com USA LLP (or their ocers, directors, employees or agents)
for any damages (whether direct or indirect, special, punitive, incidental, consequential, or otherwise), loss of prots, loss of
business, or any pecuniary loss, arising out of or related to the use of the product exceed the actual price paid for the product.
Some states do not allow the exclusion or limitation of incidental or consequential damages. If such laws apply, the limitations
or exclusions contained in this statement may not apply to you.
Safety Measures
• If product has an exposed circuit board, do not touch the product under power.
Mesures de sécurité
• Si l’un des circuits imprimés du produit est visible, ne pas touchez le produit lorsqu’il est sous tension.
安全対策
• 製品に露出した状態の回路基盤が含まれる場合、電源が入っている状態で製品に触らないでください。
Misure di sicurezza
• Se il prodotto ha un circuito stampato visibile, non toccare il prodotto quando è acceso.
Säkerhetsåtgärder
• Rör aldrig vid enheter med oskyddade kretskort när strömmen är påslagen.
FR: fr.startech.com
DE: de.startech.com
ES: es.startech.com
NL: nl.startech.com
IT: it.startech.com
JP: jp.startech.com
StarTech.com Ltd.
45 Artisans Cres
London, Ontario
N5V 5E9
Canada
StarTech.com Ltd.
Unit B, Pinnacle 15
Gowerton Rd,
Brackmills
Northampton
NN4 7BW
United Kingdom
StarTech.com LLP
2500 Creekside
Parkwy
Lockbourne, Ohio
43137
U.S.A.
Notes: The maximum distance between the transmitter and the receiver is 600 ft. If
the wireless signal is obstructed by walls, or other interference the signal quality and
maximum distance will likely be reduced.
When extending infrared, this product can only support an IR signal in the 38kHz
carrier frequency.
Mounting the Transmitter/Receiver
The Transmitter/Receiver can be mounted using the Mounting Hardware included.
1. Align the Mounting Hardware with the Mounting Hole on the back of the
Transmitter/Receiver.
2. Screw the Mounting Hardware into the Mounting Hole, being careful not to
overtighten.
3. Loosen the Adjustment Knob on the Mounting Hardware.
4. Adjust the position the Transmitter/Receiver is facing.
5. Tighten the Adjustment Knob on the Mouting Hardware when the Transmitter/
Receiver is in the desired position.
LED Indicators
LED Display Function
HDMI
Transmitter
and
HDMI
Receiver
Network Solid Power is connected to the
Transmitter.
Slowly ashing red Connecting to a Device.
Video Solid Video transmission active.
Slowing ashing blue No video signal input.
Network &
Video
Flashes Indicates the Receiver is pairing.
Alternate ashing
(ash, pause, ash)
Channel switching in active.
Connecting the Extender
1. Position the Wireless Transmitter near the Video Source Device (e.g. Computer,
Blu-ray Player).
2. Connect an HDMI Cable (sold separately) to the HDMI IN Port on the Wireless
Transmitter and to the Video Output Port on the Video Source Device.
3. (Optional) Connect the IR Blaster to the IR Out Port on the Wireless Transmitter,
and position the IR Blaster directly in front of the IR sensor on your Video Source
Device.
Note: Check the manual of your Video Source Device for the IR sensor location.
4. Connect the Universal Power Adapter to the DC 5V Port on the Wireless
Transmitter and to an AC Electrical Outlet.
5. Position the Wireless Receiver near your Display Device (e.g. Television, Projector).
6. Connect an HDMI Cable to the HDMI Output Port on the Wireless Receiver and to
an HDMI port on the Display Device.
7. (Optional) Connect the IR Receiver to the IR In Port on the Wireless Receiver, and
position the IR Receiver in the area you would like to point your IR controller.
8. Connect the Universal Power Adapter to the DC 5V Port on the Wireless Receiver
and to an AC Electrical Outlet.
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