MULTIPLEX 
switched channel can also be used, controlled by 
the throttle function trim lever. 
•  All  the  primary  control  surface  functions  feature 
digital trims. 
•  A  buzzer  is  used  to  provide  audible  feedback  to 
the user, indicating the most important processes, 
such  as:  detecting  the  ID  receiver,  range-check, 
voltage  monitor,  trim  function,  Dual  Rate  setting, 
model select. 
•  The  transmitter  software  is  carefully  structured 
with ultra-simple operation in mind. The simplicity 
of  operating  the  transmitter  makes  it  extremely 
easy  to  set  it  up  to  suit  virtually  any  other  model 
from  a  huge  range  of  manufacturers.  The  trans-
mitter  even  stores  the  final  trim  settings  for  each 
specific model. 
•  The pioneering, ultra-secure M-LINK transmission 
process  with  its  intelligent  channel  management 
system  creates  the  best  possible  pre-conditions 
for totally reliable operation. The M-LINK process 
makes  it  possible  to  operate  up  to  150  models 
simultaneously without mutual interference. 
•  With  the  three  recommended  AA-size  dry  cells 
the SMART SX transmitter operates for the enor-
mously long time of up to 25 hours. The unit also 
includes  an  integral  voltage  monitor  with  a  war-
ning threshold set at a sensible level. 
•  It is possible to set up the transmitter to control al-
most any RC model currently available. 
•  The  SMART  SX  transmitter  is  ideal  for  use  as  a 
Pupil  transmitter  in  a  Trainer  system,  providing 
the beginner with  the  perfect opportunity to  learn 
the  initial  steps  in  the  art  of  model  flying  quickly 
and  safely.  The  wireless  connection  to  the 
Teacher  transmitter  requires  the  M-LINK  Trainer 
Stick  -  which  can  be  used  with  any  Trainer-
capable  MPX  transmitter  fitted  with  a  multi-
function socket - or a PROFI Tx using COPILOT. 
•  The transmitter software (= firmware) can  be  up-
dated  using  the  integral  interface  located  in  the 
battery  compartment.  This  makes  it  possible  to 
keep  the  transmitter  completely  up-to-date  at  all 
times. The same method can be used to transfer 
the settings for new RR+ models into the transmit-
ter. 
 
4. S
AFETY NOTES
,
 OTHER INFORMATION
 
 
Radio-controlled models  and  the  associated RC  sys-
tems are not playthings in the usual sense of the term. 
Building and  operating them safely  calls for a  certain 
level  of  technical  competence  and  manual  skill,  to-
gether with discipline and a responsible attitude at the 
flying field. Errors and  negligence in building and  fly-
ing the model can result in serious personal injury and 
damage to property. Since neither we, as manufactur-
er, nor the retailer have any control over the construc-
tion,  maintenance  and  operation  of  our  products,  we 
are obliged to take this opportunity to point out these 
hazards and to
 
emphasise your personal responsibility. We 
deny all liability. 
 
It  really  is  essential  to  observe  the  following  safety  notes, 
as you bear the responsibility for the safe operation of this 
product: 
•  Please read right through these instructions, and do not 
operate  the  system  until  you  have  studied  the  infor-
mation and the following safety notes. 
•  It is never permissible to  make  technical  modifications 
to  the  radio  control  system.  Use  genuine  accessories 
and replacement parts exclusively; these include trans-
mitter battery, receiver and servos. 
•  If you intend to operate the system in conjunction with 
products  from  other  manufacturers,  you  must  ensure 
that they  are  of good quality and  work properly.  Every 
new  or  changed  combination  of  components  must  be 
checked exhaustively  before  use;  the  equipment  must 
work correctly and at full range. Do not operate the RC 
system or  the  model  if  something  is not in order. First 
seek out and eliminate the problem. 
•  A  model  flying  out  of  control  for  whatever  reason  can 
certainly  cause  serious  personal  injury  and  property 
damage. For this reason it is the modeller’s responsibil-
ity  to  take  out  third-party  insurance  for  model  aircraft, 
and heed the regulations. This really is mandatory. 
•  Always  keep  to  the  correct  sequence  when  switching 
the system on and off, as this avoids the risk of the mo-
tor bursting into life unexpectedly: 
-  When switching on 
Always  switch  the  transmitter  on  before  connecting 
the flight battery or switching the receiving system on. 
-  When switching off 
Always disconnect the flight battery or switch the re-
ceiving  system  off  before  switching  the  transmitter 
off. 
•  Have  your  RC  system  -  especially  the  transmitter  and 
receiver  -  checked  at  regular  intervals  (every  two  or 
three  years)  by  an  authorised  MULTIPLEX  Service 
Centre. 
•  The transmitter must be operated exclusively within the 
stated temperature range.  Please  note  that  condensa-
tion may occur inside the transmitter if it is subjected to 
a  major  change  in  temperature.  Damp  can  affect  the 
operation  of  the  transmitter  and  any  other  electronic 
equipment. 
•  If moisture affects any electrical unit, cease operations 
immediately,  disconnect  the  power  supply,  and  allow 
the  device  to  dry  out  completely,  preferably  with  the 
case open; this may take several days. After this carry 
out  a  careful check  of  its  functions.  If  you  are  still  un-
sure,  take  the  affected  equipment  to  an  authorised 
MULTIPLEX Service Centre for checking. 
 
In addition to these safety notes, please observe the follow-
ing points. 
•  Build your model with great care; this applies in particu-
lar if  you have  to repair your model. The responsibility 
for completing the work competently rests with you. 
•  Install  the  servos  and  mechanical  linkages  in  such  a 
way that the control surfaces deflect freely, and are not