Rules and conditions for affixing the CE marking and the identification number of the notified body
Article 20
1. The CE marking shall be affixed visibly, legibly and indelibly to the radio equipment or to its data plate, unless that is not possible or not warranted on account of the nature of radio equipment. The CE marking shall also be affixed visibly and legibly to the packaging. 2. The CE marking shall be affixed before the radio equipment is placed on the market. 3. The CE marking shall be followed by the identification number of the notified body where the conformity assessment procedure set out in Annex IV is applied. The identification number of the notified body shall have the same height as the CE marking. The identification number of the notified body shall be affixed by the notified body itself or, under its instructions, by the manufacturer or his authorised representative. 4. Member States shall build upon existing mechanisms to ensure correct application of the regime governing the CE marking and shall take appropriate action in the event of improper use of that marking.