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Safety sensor for train access doors
Technology Laser
LZR-W400 sensor for power-operated windows


The LZR®-RS300 is a LASER-based safety solution fully covering all train access doors in 2 or 3 dimensions. It is a perfect complement to contact edges and a convenient alternative to light grids and standard infrared sensors. Thanks to the detection range of 5 m x 5 m, the sensor covers applications with single or double leaf doors. The LZR®-RS300 is compliant with railway norms.



The LZR®-RS300 produces one plane to cover flat doors. Up to 3 additional planes can be activated to offer a volumetric coverage on curved doors.


Capacity to detect objects in mm-range (white walking stick, dog leash, etc.).

High safety

Convenient alternative to light grids and infrared solutions. In combination with contact edges, the LZR®-RS300 offers the highest safety degree on every type of train access doors.

Immunity to environment

Time of flight technology combined with a dedicated software offers efficient immunity to environmental disturbances: sunlight, rain, snow, etc.

Detection field


LZR-RS300 LASER safety sensor for train access doors
Table of specifications


laser scanner, time-of-flight measurement


Detection mode:

motion and presence


Detection range:

5 m x 5 m @ 2% remission factor


Remission factor:

> 2 %


Angular resolution:

0,3516 °


Min. detected object size (typ.):

2,1 cm @ 3 m ; 3,5 cm @ 5 m (in proportion to object distance)


Emission characteristics:

IR laser: wavelength 905 nm; max. output pulse power 75 W (CLASS 1)
Red visible laser: wavelength 650 nm; max. output CW power 3 mW (CLASS 2)


Supply voltage:

10-35 V DC @ sensor side


Power consumption:

< 5 W


Peak current at power-on:

1.8 A (max. 80 ms @ 35 V)


Cable length:

2 m


Response time:

typ 20 ms; max. 80 ms



2 electronic relays (galvanic isolated - polarity free)
Max. switching voltage: 35 V DC / 24 V AC
Max. switching current: 80 mA (resistive)
Switching time: tON=5 ms; tOFF=5 ms
Output resistance: typ 30 Ω
Voltage drop on output: < 0.7 V @ 20 mA
Leakage current: < 10 μA



2 optocouplers (galvanic isolated - polarity free)
Max. contact voltage: 30 V DC (over-voltage protected)
Voltage threshold: Log. H: >8 V DC; Log. L: <3 V DC
Response time monitoring input: < 5 ms



1 blue LED: power-on status
1 orange LED: error status
2 bi-coloured LEDs: detection/output status (green: no detection; red: detection)



125 mm (D) x 93 mm (W) x 70 mm (H) (mounting bracket + 14 mm)



310 g (mounting bracket: + 60 g)








Mounting angles on bracket:

-45 °, 0 °, 45 °


Rotation angles on bracket:

-5 ° to +5 ° (lockable)


Tilt angles on bracket:

-3 ° to +3 °


Protection degree:



Temperature range:

-30 °C to +60 °C if powered; -10 °C to +60 °C unpowered



0-95 % non-condensing



< 2 G


Pollution on front screens:

max. 30 %; homogenous


Expected lifetime:

20 years


Norm conformity:

This product conforms to all applicable European Union legislation. Please refer to the Declaration of Conformity for further information.


Specifications are subject to changes without prior notice – Measured in specific conditions.

  • lzr-u9xx laser measurement device

    Safety sensor for train access doors

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