Infrared Light Module LM-IR-16-4
for semitrailer and trailer

The IR light module at a glance:

  • For controlling lights, servos and motors at semitrailers and trailers
  • Expansion module for SFR-1, USM-RC-2, USM-RC-3 and UFR-1230
  • Supply voltage between 6 - 12 V
  • 1:1 transmission of signals via Infrared
  • 16 switching outputs for lights including special light effects
  • 4 servo outputs
  • 1 motor output
  • Additional settings with the software LM-Teacher
  • Expansion for road trains possible
  • Small size: 58 x 44 x 17 mm


The Infrared light module LM-IR-16-4 is an expansion for the modules:
The light module can be used to control lights, servos and motors on a semitrailer or trailer. The signals are transmitted wirelessly via Infrared.

Light control
The LM-IR-16-4 has 16 switching outputs for connecting lights (e.g. lamps and LEDs). The light signals are passed on 1:1 from the main module to the light module. For the switching outputs 13 - 16 special functions such as a 1- and 4-channel all-round light, a 4-channel running light and different flashing effects can be selected.

Motor control
The motor output can be used for direct control of e.g. trailer supports, ramps or tipping movements. A switch for controlling the motor output manually can be connected to the module.

Servo control
There are 4 servo outputs on the light module, which can be used to control various movements. Applications for this are e.g. trailer supports, the locking and unlocking of a fifth wheel support, steerable axles or tilting movements. In order to control further motors, speed controllers can also be connected to the servo outputs.

Road train
With an IR transmiter diode an additional light module can be connected. All IR signals are transmitted 1:1 to the next light module.

Using the function at the main module („LM: Activate road train ID X“), the servo and motor outputs can be controlled separately at each light module. This is how road trains with several trailers can be easily built. The trailers can be controlled together or separetely.

Additional settings with LM-Teacher
When delivered, the light module is ready for operation. With the software LM-Teacher, settings can be adjusted and additional options selected. For using the software, the light module is connected to a Windows PC with the data cable K-USB-2.

The LM-Teacher can be downloaded here for free: Download (4 MB)

For using the light module, at least version V1.30 of the SFR-1 Sound-Teacher, version V1.80 of the USM-RC-2 Sound-Teacher, version V1.00 of the USM-RC-3 Sound-Teacher and version V1.30 of the Drive-Teacher UFR-1230 are required.

For additional information: Operating manual (PDF).

Optional light module supplies

Image Name Function
Switch for manual motor control

To pin X5/6 a switch can be connected to control the motor manually without the radio. The speed of the motor can be set in the LM-Teacher.

King pin for Tamiya trucks with retaining clip for IR receiver

The IR transmitter diode is mounted underneath the fifth wheel and the IR receiver is fixed on top of the king pin. For an easy mounting we offer a special clip in which the receiver can be clamped.

For the transmission of the infrared signal, the king pin has a hole in the middle.

IR transmitter diode
This can be used to equip other towing vehicles to control the LM-IR-16-4.

One IR transmitter diode is already included in delivery!

Technical data

Supply voltage (Ub): 6 – 12 V DC
Power consumption: Standby current: approx. 25 mA
Switching outputs: 16 pieces, minus switching, the hight of the output voltage corresponds to the supply voltage.
Continuous current: 1,5 A,
Total current of all outputs max.: 3 A
Light functions: • 1:1 copy of 16 outputs of SFR-1
• 1:1 copy of 12 outputs of USM-RC-2
• 1:1 copy of 16 outputs of USM-RC-3
• 1:1 copy of 8 outputs of UFR-1230
• 1-channel and 4-channel rotating beacon
• 4 various flashing effects
• 4-channel chaser light
Servo outputs: 4 pieces
max. power consumption of servos: 1 A,
short time 4 A
Motor output: 1 piece
max. power consumption of motor: 2 A,
short time 3 A
Additional connections: • IR receiver
• Switch for manual motor control
• Data cable / IR transmitter for road trains
Permissible ambient temperature: 0 – 60° C
Permissible relative air humidity: Max. 85 %
Size: 58 x 44 x 17 mm
Weight: 26 g

Prices (incl. 19 % VAT.)

Infrared light module LM-IR-16-4
Suited for SFR-1, USM-RC-2, USM-RC-3 and UFR-1230
89,95 € In stock

Switch for manual motor control
5,95 € In stock

King pin IR Tamiya KB-IR-T
with retaining clip for IR receiver
9,95 € In stock

Infrared receiver for SM-IR-16, SM-IR-16-2 and LM-BT-16-4
as replacement
3,95 € In stock

Infrared transmitter diode for SFR-1, USM-RC-2, USM-RC-3 and UFR-1230
as replacement
2,95 € In stock

Ferrite ring for suppression
for motor- and receiver cables
1,95 € In stock

Included in delivery:
  • Light module LM-IR-16-4
  • IR transmitter diode (blue)
  • IR receiver (red)
  • 1 x ribbon cable (40 cm) for connection of switching outputs
  • Operating manual (German - additional languages can be downloaded)

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