IR55
Information and
Installation Guide
Infrared
Connection
Module
Knoll Systems dealers to be free from defects in materials and workmanship.
The warranty extends for two full years from the date of purchase by the
original consumer. Any products returned within the warranty period will be
repaired or replaced at Knoll Systems option, at no cost. Knoll Systems will not
be responsible for the actual cost of removal or reinstallation of the product, nor
of any incidental or consequential damages. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above
limitations may not apply to you. This warranty gives you specific legal rights.
You may have additional legal rights that vary from state to state.
Warranty
Knoll Systems warrants its products sold in the USA by authorized
Typical IR Repeater System
Note: Position and attach
emitter over component
IR window
Installation Tips:
1. Follow all local electrical & building code
requirements.
2. The IR55 is usually positioned behind the
stereo components it is helping to control.
3. Connect all of the infrared receivers in parallel
to the IR55 blue three terminal connector as
shown in the diagram. Wires can be solid or
stranded, shielded or unshielded with a minimum
of 24 gauge for runs under 200’, 22 gauge for
runs under 500’ and 20 gauge for runs up to
1000’. Wires can be looped from IR21a to IR21a
or home run. Home runs generally offer more
reliability and future flexibility.
4. Connect the emitters by inserting their plugs
into any available IR55 emitter jack. Up to four
singleemitterordoubleemitters(maximumeight
emitters) can be connected to a single IR55. If
more emitter connections are required, call Knöll
for amplified connection block information.
Knoll Systems
145TyeeDrive
Point Roberts, WA98281
IR55
IR55 Features
* Easy to install, easy to use!
*No maintenece or adjustments
*Connect up to 10 infrared receivers
*Connect up to 8 emitters (four IR34 double
emitters)
*Connect a PS1202 or PS1205 power supply
Specifications
Infrared carrier frequency: 30-60kHz
Power requirements: PS1202 200mA or PS1205
500mA unregulated 12VDC power supply
Dimensions: 2-1/2” w x 1” h x 2-5/8” D
(63 x 26 x 67mm).
Color: Black
IR21b
GND
+12VDC
IROUT
IR21b
GND
+12VDC
IROUT
IR55
Connection
Block
PS1202
Power
Supply
IR31 single emitter
IR34 double emitter
Cassette deck
CD Changer
Satellite dish
Note: IR21a’s and
other IR receivers
are wired in parallel.
Maximum 10 per
system.
+12VDC
GND
IR OUT
v 1.2
Note: When using more than 150 foot lengths of
shielded cable (total) to connect IR receivers to the
IR55, it may be necessary to add a 470 ohm 1/4 watt
5% resistor between the IR55 “GND” and “IR OUT”
terminals. This resistor discharges cable capacitance.
5. Lastly plug the PS1202 or PS1205
power supply into the IR55 and test the
wholesystem.
