Prescribed apparatus must—
(a) be approved by the Commission for the purposes of these Regulations; or
(b) be approved to the ETSI standards or FCC Part 15 Regulations referred to in Part III of this Schedule as appropriate by the Commission following type testing at a test laboratory, or otherwise complies with such standards in the case of non-manufactured apparatus used as metal detectors or model control apparatus referred to in Part III, paragraphs 13 and 20 below.