6 | Sonite R
17. Environmental conditions ................................. 38
18. Care and maintenance ...................................... 41
19. Exchanging the earwax protection ................ 44
20. Service and warranty ...................................... 49
21. Compliance information ................................... 51
22. Information and description of symbols ....... 60
23.Troubleshooting ................................................ 65
24. Important safety information .......................... 70
Further information