SCALANCE WxM766 
Operating Instructions, 03/2022, C79000-G8976-C617-03 
9
Safety notices
CAUTION 
To prevent injury and damage, read the manual before using the device. 
Read the safety notices 
Note the following safety notices. These relate to the entire working life of the device. 
You should also read the safety notices relating to handling in the individual sections, 
particularly in the sections "Installation" and "Connecting up". 
WARNING 
Electric devices have hot surfaces. Do not touch these surfaces. They could cause 
severe burns. 
• Allow the device to cool down before starting any work on it.
WARNING 
Do not open the device when the supply voltage is turned on.