BEA LZR-U920 User Manual Download Page 2

Page 2 of 4  

75.5847.03 LZR-U920_U921 20191125

The device emits invisible (IR) and visible laser radiation.

IR laser: wavelength 905nm; output power 0.10mW 

(Class 1 according to IEC 60825-1)

Visible laser: wavelength 635nm; output power 0.95mW 

(Class 2 according to IEC 60825-1)

The visible laser beams are inactive during normal operation.

The installer can activate the visible lasers if needed.

Do not stare into visible laser beams.

SAFETY

INSTALLATION AND MAINTENANCE

Do not look into the laser 
emitter or the visible red laser 
beams.

The warranty is void if 
unauthorized repairs are made 
or attempted by unauthorized 
personnel. 

Only trained and qualified 
personnel are recommended to 
install and set up the sensor. 

CAUTION! 

Use of controls, adjustments, or performance of procedures other than those specified herein 
may result in hazardous radiation exposure.

Avoid condensation on 
the laser windows.

Avoid extreme vibrations.

Do not cover the laser 
windows.

Avoid moving objects 
and light sources in front 
of the laser window.

Avoid the presence of 
smoke and fog in the 
detection field.

Avoid exposure to 
sudden and extreme 
temperature changes.

Keep the sensor 
permanently powered in 
environments where the 
temperature can drop 
below 35 °F.

Do not use aggressive 
products to clean the 
laser windows.

Avoid direct exposure to 
high pressure cleaning.

Clean the laser window 
with compressed air.  If 
needed, wipe only with 
a soft, clean and damp 
microfibre cloth. 

The sensor manufacturer cannot be held responsible for incorrect installations or inappropriate adjustments of the sensor/device; therefore, the sensor 
manufacturer does not guarantee any use of the sensor outside of its intended purpose.
CAUTION: Use of controls or adjustments or performance of procedures other than those specifi ed herein may result in hazardous radiation exposure.
Installers and service personnel are responsible for executing a risk assessment following each installation/service performed, ensuring 
that the sensor system installation and/or device is compliant with local, national, and international regulations, codes, and standards.

INSTALLATION/SERVICE COMPLIANCE EXPECTATIONS

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