1. ECE R 44/04
It shows the European test standard for child safety seats. The latest version (04) of the test standard has been in force since 2006. However, child restraint systems tested in compliance with the earlier version ECE-R 44/03 can still be used. Seats with test labels ECE R-44/01 and ECE R-44/02 or with an “officially approved” label are no longer permitted for use.
2. UNIVERSAL or SEMI-UNIVERSAL
This shows if the child seat can be used in all vehicles (universal) or if some vehicles are excluded (semi-universal).
The child seat is approved for all passenger car seats which are equipped with a seat according to ECE 16 standard or equivalent standard.
These child seats are approved for particular passenger car seats only. In the case of a semi-universal homologation, you can check if the product fits your car with the compatibility check: http://cybex-online.com/sirona#a-compatibility
Both categories on the label:
In the case the child seat is installed by means of the ISOFIX Connect System and secured with the car’s seat belt (e.g. Juno-fix, Pallas 2-fix, Solution X2-fix), it is approved for selected cars only. These car seats, however, can be installed universally when using them without the ISOFIX Connect System which can be easily folded away.
3. 0-18kg: Body weight for which the seat is approved = ECE Group (in this case Group 0+/1)
4. E1: Country designation refers to the country in which the seat was certified (e.g. 1 = Germany, 2 = France, 3 = Italy, 9 = Spain, 11 = United Kingdom, 43 = Japan)
5. 04301251: Test number: the first two digits refer to the version of the test standard used: These two digits should either be 04 or at least 03!