Description: a compact sequence of  characters that identifies an abstract or physical resource of a product; Name: URI of the device instance
Description: Unique global identification of the product using an universal resource identifier (URI); Name: URI of the product
Description: norm/stipulation describing the explosion protection. The explosion protection type, the device category, the temperature class as well as the device / explosion group are taken from this norm. The type and number of the norm/stipulation with issue year and issue month must be given; Name: Reference norm of the explosion protection