3 4
EN
Table 
ref.
Description
G:5 H =  Hearing protection estimation for high 
frequency sounds (ƒ ≥ 2000Hz).
M =  Hearing protection estimation for medium 
frequency sounds (500Hz < ƒ < 2000Hz).
L =  Hearing protection estimation for low 
frequency sounds (ƒ ≤ 500Hz).
SNR = Single Number Rating of hearing 
protector performance
G:6 S = Small
M = Medium
L = Large
EN 352-6 Electrical safety related audio input
Wireless input for two-way radio
Table 
ref.
Description
H:A External wireless safety related audio input
H:1 Input signal level U (mV
RMS
) 
H:2 Sound output level (dB(A))
H:3 Criterion input signal (mV
RMS
) for which the 
sound output level is equal to 82 dB(A)
H:4  SPL. Sound output level for maximum input 
signal (dB(A))
H:5 Time equivalent to 82 dB(A) over 8h (hh:mm) 
for maximum input signal
4.3.  CARRIER DEVICES
These earmuffs should be tted to and used only with the 
carrier devices listed in table H. These earmuffs were tested 
in combination with the carrier devices listed in table H, and 
may give different levels of protection if tted to different 
carrier devices.
Explanation of the carrier attachment table: 
Table 
ref.
Description
J:A Compatible carrier devices
J:1 Manufacturer
J:2 Model
J:3 Attachment code
J:4 Head size: S = small, M = medium, L = large
5.  OVERVIEW
(Figure A:A - A:C)
A:A Headband versions
A:B Neckband versions
A:C Carrier attachment versions
5.1.  A) COMPONENTS
(Figure A)
(A:1) Headband (PVC)
(A:2) Headband padding (PVC foil)
(A:3) Headband wire (stainless steel)
(A:4) Two-point fastener (POM)
(A:5) Ear cushion (PVC foil and PUR foam)
(A:6) Attenuation cushion (PUR foam)
(A:7) Cup (ABS)
(A:8) Speech microphone (electret microphone) (ABS, PA)
(A:9) On/Off/Mode button (PBT)
(A:10) (+) button (PBT)
(A:11) (–) button (PBS)
(A:12) Antenna (PE, ABS, TPE)
(A:13) Speech microphone input (J22) (ABS)
(A:14) PTT button (PBT)
(A:15) Battery lid (PP/stainless steel)
(A:16) Carrier attachment (POM, PA66)
(A:17) Neckband cover (PO)
6.  SETUP
6.1.  GENERAL
The following points covers the main actions to make the 
product ready for operation.
6.2.  REMOVE/INSTALL BATTERIES
(Figure F)
Make sure you have read and understood the contents of 
Chapter 2. Safety before replacing the battery/batteries.
F:1. Loosen the screw holding the battery lid using a screw 
driver. Turn the screw counter clockwise.
F:2. Tilt the lid top outwards (1). Pull the lid downwards (2) in 
order to remove it from the headset.
F:3. Insert or replace the batteries. Make sure the polarity 
corresponds to the markings. Install the lid on the headset 
and tighten the screw.
Low battery level is indicated by a voice message: “battery 
low”, repeated every ve minutes. If the batteries are not 
replaced, a “battery empty” warning will eventually be heard. 
The unit will then switch off automatically.
NOTE: Performance may deteriorate as the batteries get low.
7.  FITTING INSTRUCTIONS
7.1.  GENERAL
Inspect the hearing protector before each use. If damaged, 
select an undamaged hearing protector or avoid the noisy 
environment.
NOTE: Brush aside hair around your ears so the ear cushions 
(A:5) t snugly.
Spectacle frames should be as thin as possible and t close 
to the head to minimise acoustic leakage.