vastuvõtja, mis toimib nn induktiivsilmuse sees. Ümber territooriumi on tõmmatud traat, millesse antakse madalsageduslik signaal, mida kuuldakse kõrvaklappides.
HEARING PROTECTION.
- Earplugs and similar devices.
- Full acoustic helmets.
- Earmuffs which can be fitted to industrial helmets.
- Ear defenders with receiver for LF induction loop.
- Ear protection with intercom equipment.
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