| File format | Explanation |
| *.knxei | File extension of product entry submitted by the KNX manufacturer to KNX Association for registration. |
| *.knxrcd | File extension of registration entry submitted by KNX Association to the KNX manufacturer to change the registration status of a product/application. |
| *.vd3 to *.vd5 | File extension of product database submitted by the manufacturer to the ETS end user. *.vd3 to *.vd5 is used for ETS3. |
| *.knxprod | File extension of product data entries submitted by the KNX manufacturer to the ETS end user. *.knxprod files are used for both ETS4, ETS5 and ETS6. |