Knoll Systems Stereo Receiver UR-STEREO RECEIVER Prospecto

Models and Dimensions: 
UDR-Stereo (in-wall Decora™ version): 4.1"h x 1.4" w x 2.0"d.  

UDS-Stereo (in-wall Decora™ version): 4.1"h x 1.4" w x 2.0"d. 

UR-Stereo (black enclosure): 1.1"h x 2.6"w x 2.8"d (28 x 66 x 71 mm). 

US-Stereo (black enclosure): 1.1"h x 2.6"w x 2.8"d (28 x 66 x 71 mm). 

Input and Outputs: 

Send Unit: two stereo input RCA jacks, one 3.5mm mono 
infrared emitter jack, one RJ-45 out-jack, one-DC power input. 

Receive Unit: Three RCA output jacks, one RJ-45 in-jack, one-

DC power input. 

Audio Input Impedance: 

Receive Unit: 20k ohms, max 3 Vp-p. 

Frequency Response: 10Hz-50kHz +/- 3 dB 

Power: 

Send Unit: 12 VDC unregulated (one PS1202 will power one 
each send and receive).  

Receive Unit: 12 VDC unregulated (one PS1202 will power one 

each send and receive). 

Infrared: 

Send Unit: One stereo 3.5mm jack to connect one single or one dual 
emitter. 

Receive Unit: One triple 3.5 mm jack to connect a three wire Knoll or 

other infrared receiver. Supplies 12 VDC power for infrared receiver 

without requiring another power supply.  

Warranty 

 

Knoll Systems warrants balun products sold in the USA and Canada by 
authorized Knoll dealers to be free of defects in materials and workmanship. 
This warranty extends for three full years from the date of purchase by the 
original consumer. Any products returned to Knoll Systems and found to be 
defective by Knoll Systems within the warranty period will be repaired or 
replaced at Knoll System’s option, at no charge. Knoll Systems will not be 
responsible for the actual cost of installation or removal of the product, nor for 
any incidental or consequential damages. Some states do not allow the 
exclusion or limitation of incidental or consequential damages, so the above 
limitation may not apply to you.  This warranty gives you specific legal rights.  
You may have additional legal rights that vary from state to state. 

 

145 Tyee Drive Point Roberts, WA 98281 

12140 Horseshoe Way, Richmond BC V7A 4V4 

tel (604) 272 4555, fax (604) 272 5595 

Made in Canada   Knoll Systems All Rights Reserved 

 

Warning: To be installed and/or used in accordance with 
appropriate electrical codes and regulations. If you are not sure 

about any part of these instructions, consult a qualified 
electrician. 
 

Caution: Do not install this product in an electrical junction box 
with 110V or higher unless an approved barrier separates the 

high and low voltage sections. 
 

Introduction: Thank you for your purchase of a Knoll active 
balun system. This system is specifically designed to send a 

stereo line level and an infrared signal safely down a cat 5 or cat 
5e wire up to 1000 feet without encountering noise problems. 
Balun is an acronym for:  

 

BALance – UNbalance 

 
The send module takes a conventional stereo line level signal 

and balances it (signal is not tied to a ground reference) then 
sends it via cat 5 to the receive module (with power from the 

send module). The receive module unbalances the stereo signal 
back to its former state. This process does not allow any stray 
magnetism of any sort to contaminate the signal while it is 

being transported. 
 

Features: 
  

•  Tabletop box design or Decora™ style available. 

 

•  Safely sends stereo signals up to 1000’ (300 m).  

 

•  Sends infrared signal from receiver back to sender.  

 

•  PS1202 power supply required on send side only. 

 

•  Mix and match tabletop and decora style.