Knoll dir21p Installation Instruction

rical & building code requirements. 

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. Follow all local elect

1

 

. The DIR21 is usually wall mounted at light switch heigh

2

does not normally require a junction box. In order to work it 
requires a PS1202 (200 mA) or PS1205 (500 mA) 12 VDC 
unregulated power supply, IR31 (single) or IR34 (dual) emitt

A connection block is not needed. 
 

. The three conductor in wall wi

3
1000’. Wires can be solid or stranded, shielded or unshield

with a minimum of 28 gauge for runs under 200’, 22 gauge fo
runs under 500’ and 20 gauge for runs up to 1000’. 

 

. Cut off the plugs of both the PS1202 power suppl

4
emitter to be used. Strip back and connect the two – or groun

wires of the power supply and emitters (non white stripe on 
wire) together with the wire conductor going to the “GND” 

terminal of the DIR21P. Next connect the emitter + wire (the
one with the white stripe) to the wire going to the DIR21P “SI

terminal.  Then connect the PS1202 power supply + wire (the 
one with the white stripe) to the wire going to the “12V” 

terminal on the DIR21P. Polarity must be strictly observed. 

 
5. Position the emitters over the IR receivers on the 

component(s) to be controlled, plug in the PS1202 power supply 
and the system should be ready to go.   

 
6. The infrared system is usually left plugged in all the time (to 

an unswitched outlet) as it uses very little power. 
 
7. Test the digital infrared system to see if it is working 

properly. If it works only from a very close range or it does not 
work at all, first mark where the pot adjustment is on the 

DIR21P blue color pot on the rear of the DIR21P. This is so you 
can reset it to that starting point again. Try adjusting the pot on 

the connection block very slightly left and right as you are 
testing the receiver with the remote control. This may require 

two people. This should correct for the problem. If it still does 
not work properly, please call Knoll Systems and ask for infrared 
technical support at 1-800-566-5579. The help line is open from 

7:30 a.m. to 5:00 p.m. Monday to Friday Pacific time. 

  Digital

 Infrared

Receiver

RJ45

    IR

Receiver

  Blue

talkback

   LED

PS1202

12 V DC

Power Supply

RJ45

  Blue

talkback

   LED

Cut off power supply and emitter

plugs, strip back insulation and

join with inwall wires as shown.

Grounds or - are common.

Emitter white

stripe wire is SIG

Three conductors from power

supply and emitter to DIR21P

PS1202 +12VDC

wire has white

stripe. If in doubt

test with a voltmeter.