MT155H530A 380产品概述
Optime PTL (Push-To-Listen) Hearing Defenders
A simple press of the button on the outside shell lets you communicate whilst maintaining your hearing protection. Speech level to the right ear is electronically attenuated to the safe 'Exposure Limit Value' of 87dB, cited in the Control of Noise at Work Regulations 2005.,Press once to provide 30secs listening time or press again to return to full protection. Press & hold to give continuous listening - release to give a further 30secs or press again to return to full protection.
