User manual

Features and properties

• Uses infrared sensor

• Protected against ambient light

• Galvanically isolated output

• Adjustable sensing distance

Technical parameters

Supply voltage: 8 – 16 V

Idle mode current consumption: 20 mA

Max. current consumption: 30 mA

Dimensions: 44 x 23 mm

Short description

The sensor of the module receives the infrared light reflected by

the object and activates the output. Due to the infrared light touch

free measuring is made possible.

Mounting

The module shall be mounted under the model railway table

together with the sensor using the prepared holes (Figure 2). The

IR-Diode and the sensor must be aligned with the upper edge and

shall not be covered. Eventually it may be necessary to protect the

sensors by means of insulating tape or shrinkable tube against

undesired reflections from foreign light sources.

Wiring

The module shall be installed according to the wiring diagram

(Figure 1). The module may be connected to various devices e.g.

LEDs or the control input of other circuits, such as Sound player

(TM-76875), Light signal decoder (74433), Railroad crossing

control unit (72427) etc.

Adjustment

The sensing distance can be adjusted by means of the

potentiometer "Adjust distance". Choose a setting at which the

output is not permanently active yet!