However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
WARNING:
Changes or modifications made to this equipment, not expressly approved by our company, or parties authorized by our company ,could void the user 
s authority to operate the equipment.