MULTIPLEX 
damage the transmitter or cause interference, and 
might even  endanger  the  pilot.  The  same  effects 
may occur when an electrical storm is building up. 
•  Counter-measures: 
Cease  operations  as  quickly  as  possible,  walk  a 
little  way  down  the  mountain  in  order  to  reach  a 
less  exposed  point,  and  never  fly  in  a  thunder-
storm or in the vicinity of such conditions. 
•  Keep well clear of mobile telephones! 
As a basic rule we recommend that you switch off 
mobile  telephones  and  any  other  device  which 
could affect the pilot’s concentration. 
•  The SMART SX  is protected against interference 
from  electro-magnetic  fields,  such  as  those  gen-
erated by  mobile  telephones.  The  system far  ex-
ceeds  the  legal  requirements  regarding  inter-
ference  rejection.  However,  the  rapid  develop-
ment in mobile radio, and the enormous range of 
devices  now  in  use,  do  represent  a  residual  risk 
which  is  difficult  to  assess.  For  safety’s  sake  we 
therefore  recommend  that  you  always  keep  at 
least two metres away from any mobile telephone 
which is switched on. 
•  Antenna Separating Distance 
This  product  contains  a  radio  transmitter  with 
wireless  technology  which  has  been  tested  and 
found to be compliant with  applicable  regulations 
governing a  radio  transmitter  in  the  2.400GHz  to 
2.4835GHz frequency range. 
 
When  operating  your  Smart  SX  transmitter, 
please be sure to  maintain a  separation distance 
of at least 5cm between your body (excluding fin-
gers, hands, wrists,  ankles and feet) and  the  an-
tenna  to  meet  RF  exposure  safety  requirements 
as  determined  in  the  FCC  regulations. 
 
 
5. S
ET CONTENTS 
/
 
A
CCESSORIES
 
 
The  SMART  SX  radio  control  set  contains  the  com-
ponents shown in the photo below: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
•  SMART SX M-LINK transmitter 
•  RX-5 light M-LINK ID 1 receiver 
•  Three AA-size dry cells 
•  Multi-lingual instructions 
 
A  set  of  optional  aluminium  stick  tops  can  be  fitted  to  the 
transmitter (see Chapter 7.19). They are in black (# 7 3305) 
and orange (# 7 3306) available. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
If  you  have  acquired  the  transmitter  together  with  a  MUL-
TIPLEX  RTF  model  aircraft,  the  set  contents  also  include 
the aeroplane, a matching flight battery and a 230 V battery 
charger, as shown in the second photo. 
 
The  transmitter  is  available  in  two  different  stick  modes 
(see Chapter 7.8): 
•  SMART SM M-LINK Mode 1 + 3 (# 1 5300, 1 5310) 
•  SMART SM M-LINK Mode 2 + 4 (# 1 5301, 1 5311) 
 
The following additional items are available: 
 
•  RX-5 light M-LINK receiver 
If,  for  example,  you  wish  to  build  and  equip  a  MULTI-
PLEX  RR  model,  a  normal  kit  or  another  model,  you 
will  need  an  additional  M-
LINK  receiver.  In  this  case 
please  note  the  ID  number 
required to match the mod-
el  concerned  (see  Chapter 
7.15). 
 
•  USB PC lead  (# 85149) 
 You  will  need  a  USB 
adapter  with  Uni  connector 
to  load  a  firmware  update 
via  the  port  in  the  battery 
compartment, or to  transfer 
new  RR+  model  settings  into  the  transmitter  (see 
Chapter 7.18). 
 
6. S
PECIFICATION
 
 
6.1  SMART SX transmitter 
 
Frequency band:  2.4 GHz 
Transmission type:  FHSS M-LINK 
Aerial:  Integral IOAT aerial 
Servo channels:  6 
Model memories:  50 
Servo signal format:  1.5 +/- 0.55 ms (at 100% travel) 
Power supply:  3 AA-size cells 
Current drain:  approx. 85 mA 
Weight:  approx. 355 g (incl. batteries)