Products certified according to ATEX also have the certification number as well as the
certification authority and year of certification on the label. For GFX floodlight you will find: PTB 03ATEX1114. This states that the fixture is approved by PTB (notified body number 0102) in year 2003, according to ATEX and the number given is 1114.
View ATEX labelling here
For safety utilisation, the maximum temperature of the product has to be lower than the ignition temperature of the inflammable gas or dust mixture. Based upon this, the products have to be classified into temperature classes.View temperature classes here