
Installation Instructions 
MODELS: 
WP-3H2, W-3H2 
HDMI Extender 
SAFETY WARNING 
Disconnect the unit from the power supply before opening and servicing 
For the latest information on our products and a list of Kramer distributors, visit our Web site where 
updates to this user manual may be found. 
We welcome your questions, comments, and feedback. 
www.kramerAV.com  
info@kramerAV.com 
 

The WP-3H2 / W-3H2, HDMI Extender 
Thank you for purchasing the Kramer WP-3H2 Wall Plate (US, UK and EU versions) and/or W-3H2  
Dual Insert HDMI Extenders. The HDMI Extender is ideal for ProAV, multimedia and home cinema  
applications. The device extends the HDMI transmission length by reclocking and regenerating the 
HDMI signal before it sends the output to the HDMI display. It extends the HDMI cable distance 
between the HDMI player and the HDMI display. By placing WP-3H2 / W-3H2 in the transmission 
path, it removes dropout and digital noise (sparkles) in your picture that may result from using long 
HDMI cables. In addition, the HDMI Extender: 
• Provides a method of transmitting 4K@60Hz (4:4:4) signals at a distance of up to 20m from the 
source (10m from the source to the HDMI Extender, and 10m from the HDMI Extender to the 
display). 
• Maintains an HDMI single link video resolution of up to 4K@60Hz (4:4:4). 
• Supports the DDWG standard for HDMI compliant displays. 
• Complies with HDCP 1.4 and HDCP 2.2. 
• Supports ARC, CEC, deep color, x. v. color™, 7.1 PCM, 4K and 3D as specified in HDMI 2.0. 
Connects to an HDMI source. 
Lights when power powered (via the HDMI source or via an external 
power source connected to the 2-pin terminal block connector). 
External Power Supply 2-pin Terminal 
Block Connector 
Optional: Connect to a power supply. Connect GND to GND, +5V to 
+5V. (Typically used when the HDMI source is not strong enough to 
power the device, or when the device is located far from the source or 
when driving sources such as AOCH cables). 
Ring Tongue Terminal Grounding Screw 
Connect to grounding wire (optional). 
Connect to an HDMI acceptor 
The terms HDMI, HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of HDMI 
Licensing Administrator, Inc. 
 

Connecting the Input and Output 
The WP-3H2 / W-3H2 input is connected via a  
male-to-male HDMI cable (not provided) to an HDMI 
source, such as a 4K UHD Blu-ray player. 
The WP-3H2 / W-3H2 output is connected via a  
second male-to-male HDMI cable (not provided) to an 
HDMI acceptor, such as a 4K UHD projector or 
display. 
See the Technical Specifications for the maximum 
lengths of the input and output HDMI cables. 
Installing the WP-3H2 / W-3H2 
After connecting the ports, insert the device into the in-wall box and connect the parts as shown in the 
illustrations below: 
DECORA® is a registered trademark of Leviton Manufacturing Co., Inc. 
DECORA® design frames are included in US-D models. 
We recommend that you use any of the following standard 1 Gang in-wall junction boxes: 
• US-D: 1 Gang US electrical junction boxes. 
• EU: 1 Gang in-wall junction box, with a cut-hole diameter of 86mm and depth that can fit in both 
the device and the connected cables (DIN 49073). 
• UK: 1 Gang in-wall junction box, 75x75mm (W, H) and depth that can fit in both the device and  
the connected cables (BS 4662 or BS EN 60670-1 used with supplied spacers and screws). 
 

Grounding the HDMI Extender (Optional) 
1. Connect the ring tongue terminal to the building grounding 
point wire (a green-yellow, AWG#18 (0.82mm2) wire, 
crimped with a proper hand-tool is recommended). 
2. Insert the M3x6 screw through the toothed lock washers and 
the tongue terminal in the order shown above. 
3. Insert the M3x6 screw (with the two toothed lock washers 
and ring tongue terminal) into the grounding screw hole and 
tighten the screw. 
Connect the Power (Optional) 
Connect the 5V DC power adapter to the HDMI Extender and plug the adapter into the mains. 
Safety Instructions 
There are no operator serviceable parts inside the unit.
Disconnect the power and unplug the unit from the wall before installing. 
See www.KramerAV.com for updated safety information. 
Technical Specifications 
ARC, CEC, deep color, x. v. color™, 7.1 PCM, 4K and 3D as specified in 
HDMI 2.0 
0° to +40°C (32° to 104°F) 
-40° to +70°C (-40° to 158°F) 
10% to 90%, RHL non-condensing 
US-D: 7cm x 2.4cm x 11.4cm (2.8" x 0.9" x 4.5);  
EU: 8cm x 2.4cm x 8cm (3.1" x 0.9" x 3.1);  
UK: 8.6cm x 2.4cm x 8.6cm (3.4" x 0.9" x 3.4") 
Dual insert: 5cm x 2.8cm x 4.7cm (2" x 1.1" x 1.8") 
Shipping Dimensions  
(W, D, H) 
Wall plate: 23.2cm x 13.6cm x 10cm (9.1" x 5.4" x 3.9") (W, D, H) 
Dual Insert: 12.6cm x 8.4cm x 4.1cm (5" x 3.3" x 1.6") (W, D, H) 
Power adapter and cord 
US-D version: 1 white US Frame set and faceplate 
European version: 1 EU white frame, 1 UK white frame, 1 EU/UK white 
faceplate 
Specifications are subject to change without notice at www.kramerav.com