HumanTechnik InfraLight A-4010-0 Mode D'emploi page 21

Warranty
This warranty covers the repair of the product and returning it to
you free of charge. It is essential that you send in the product in its
original packaging, so do not throw the packaging away.
The warranty does not apply to damage caused by incorrect hand-
ling or attempts to repair the unit by people who are not authorised
to do so (destruction of the seal on the unit).
Repairs under warranty are only carried out providing you have filled
in and returned the enclosed warranty card from the dealer.
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