According to Directive 2000/14/EC, manufacturers must label their products with the following inscriptions:
- CE marking symbol
- Name, trademark and address of the producer
- Where applicable, the importer's contact details
- The four-digit ID number of the notified body involved
- Indication of the guaranteed sound power level, consisting of the single number of the guaranteed sound power in dB, the sign L WA and a pictogram as shown below.
Note: Additional requirements on labelling may apply if specified in the relevant standards.