xi 
 
WARNING 
 
 
Install the JUE-501/JUE-251 correctly in accordance with the installation manual. 
Inappropriate installation may cause incorrect operation; fire, electrical shock, or 
malfunction.  The JUE-501/JUE-251 should be installed by the trained 
technician or engineer.    The installation should be requested to the purchasing 
dealer, JRC agent or one of the JRC branches. 
 
Install ADE-BDE coaxial cable correctly in accordance with the Installation 
manual. Especially waterproof should be treated correctly in accordance 
with the installation manual.    Inappropriate installation may cause incorrect 
operation, fire, electric shock or malfunction.    The installation has to be 
carried out under the supervision of trained technician or field engineer. 
 
Use the specified power supply voltage only  (+21VDC to +31VDC), otherwise 
trouble, fire, or electric shock or malfunction may occur. 
 
Do not troubleshoot or repair the internal equipment of the JUE-501/JUE-251 by 
yourself.    Any electrical work by any person other than our trained maintenance 
staff may cause fire or abnormal operation of this equipment or electrical shock 
for you.    This equipment meets the technical standard of the Ministry of Internal 
affairs and Communications.
   
 
Do not adjust the internal circuit without a calibrated measuring instrument or 
exchange the parts because the internal circuit has been adjusted finely to 
specifications.    If the equipment works abnormally, please contact the purchasing 
dealer. 
 
Do not remove, destroy, or modify warning labels. 
It may cause poor hazard prevention.