Technical Data - LiftMaster 772E Mode D'emploi

TROUBLESHOOTING
6
The LED indicator on transmitter and/or receiver does not light up after installation.
Check the following points.
• Power supply of the system
• Potential short-circuit
• Incorrect cable connection between sensor and controller
• Broken or missing cable
• Polarity of the cables are interchanged.

TECHNICAL DATA

7
Safety class:
Temperature range:
Range:
You must ensure that the signal from the light barrier recognises the presence of
!
persons or objects (vehicle). Without additional safety precautions, the sensors do not
guarantee total safety.
The product is in compliance with the essential requirements and other relevant provisions of the
Directives 2004/108/EC and 2006/95/EC. The CE Declaration of Conformity can be obtained from
info@chamberlain.eu
IP44
- 20°C + 70°C
15 m
4