Instructions

Thank you for purchasing the Protect Basic 31 earmus. In order to enjoy the use of this product at its maxi-

mum, please read the following hints and notes for use we compiled for you.

In order to avoid hearing disorder please note the following safety hints:

SAFETY HINTS

1. Place the earmus ﬁrmly around your auricles. For best wearing comfort, adjust the headband to the size of your

head.

2. Permanently wear the headband earmu in noisy environment.

3.Theearmushouldberegularlycheckedforserviceability.Earmus,andinparticularthecushions,may

 deterioratewithuseandshouldbeexaminedatfrequentintervalsforcrackinganddeterioration.Shouldtheear

mus start to show cracks, do not use them anymore. After some years of use, the evidence of cracks is a sign of

material fatigue, which is considered a natural wear out.

4.Theuseofhygienecoversoverthecushions,mayaecttheacousticperformanceofearmus.

CHARACTERISTICS/TECHNICAL SPECIFICATIONS

• SNR22dB(SingleNumberRating)/NRR31dB(NoiseReductionRating)

• Ultralightweight:184grams

• Foldscompactlyfortransportationinapocket:10x9,5cm

• Softearpads

CHART OF ATTENUATION VALUES FOR HEARING PROTECTION PROTECT BASIC 31

AttenuationValues:H=30dB,M=19dB,L=12dB,SNR=22dB

GB INSTRUCTION MANUAL

DÖRR Protect Basic 31 Hearing Protection

Frequency (Hz) 63 125 250 500 1000 2000 4000 8000

Mean Attenuation (dB) 13.5 11.2 12.8 19.9 27.6 34.1 41.6 37.3

Standard Deviation (dB) 5.6 4.3 3.9 3.6 3.8 2.4 3.2 4.5

APV

assumed protection value (dB) 7.9 6.9 9.0 16.2 23.8 31.7 38.4 32.7