DIANGEL EZ-1B Owner's manual

USER INFORMATION GUIDE (EZ-1B)
Page 1 of 7
Product description
This DIANGEL brand entertainment audio earmuff is designed to improve safety and working
conditions in noisy environments. This user information is applicable for the Over-The-Head earmuff
model EZ-1B. To ensure you get the best comfort, fit and function out of the product it is important
that you read the instructions carefully and save them for future reference. Please refer to the sound
attenuation table for further details on noise reduction. It has electronic sound limiter to cap
entertainment audio sound pressure level to 82dBA effective to the ear. This earmuff also provides
electrical audio input signal via Bluetooth which can be connected to smart phone for communication
or via the 3.5 audio jack. There is no limiter to the sound pressure level in this instance. Refer to the
instruction in this user guide for proper use of this product. Make sure you have selected the correct
product for your application.
Approvals
The product meets the Basic Safety Requirements as laid out in Annex II of the European Community
Directive 89/686/EEC and the requirements of the EMC Directive 89/336/EEC. The product is tested
by INSPEC International Ltd, UK and Combitech AB, Sweden and CE marked by INSPEC International
Ltd (Notified body number 0194) according to EN352-1:2002, EN352-6:2002 and EN352-8:2008.
Earmuffs specification:
 Sound attenuation rating (SNR) of 29 dB
 Built-in high sensitivity noise protection microphone ensures best call quality
 High quality speaker with stereo effect
 One key phone call answering function
 4G built-in SD memory card, supports MP3/WMA music format
 Blue back-lit LCD screen with white characters
 FM radio (88 – 108 MHz) with automatic search and automatic save functions
 Bluetooth connectivity with smartphone
 3.5mm audio jack
 Min-USB port for power charging as well as data transfer
 Low power consumption with 16+ hours play time on one single full charge
General fitting instructions
Before following the fitting instructions below, brush excess hair aside and remove any ear jewellery
that could affect acoustic seal. The cushions should form a snug fit against the head with no
interference of the seal by any objects, e.g. respirator headbands or spectacles arms, and that the
cups completely enclose the ears.
1.
Ensure that the cup with
LCD and control buttons is
on the RIGHT side before
putting it on your head.
Read the marking on the
headband.
2.
Place the headband
over the head by pulling
it ajar slightly.
3.
A
djust the height of the cups by
sliding them up and down so they
seal the ears completely.

USER INFORMATION GUIDE (EZ-1B)
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Battery replacement
EZ-1B uses a 3.7V rechargeable Li-Ion battery, commonly known as BL-5B and
is easily available in the market. The battery compartment is located in the cup
WITHOUT the knobs/buttons and LCD display.
1.
Push the lever
following the
arrow direction to
open the lid.
2.
Insert th
e battery
accordingly, taking
care the polarity is
correct.
3.
Replace the lid
and press it over
the compartment
gently.
4.
Make sure the
lever is snapped
back into place to
secure the lid.
Recharge the battery when the radio signal is intermittent or fails to
operate altogether. This is done by connecting the mini-USB cable to
a computer or a wall charger rated at 5V. Recharging will stop
automatically when the battery is full.
WARNING: Do not charge the battery with voltages higher
than 5V. Always turn the earmuffs off when charging.
There are three different ways music can be piped in the earmuffs, i.e. FM radio (frequency band of
88 ~ 108 MHz), MP3 via the 3.5mm audio jack, and Bluetooth connected to a smartphone.
Operating instructions
Function keys
1. Power On/Off
Switch on the power by turning the round knob clockwise. A clicking sound
can be heard when it is switched on. To switch off, turn the knob anti-
clockwise until the clicking sound is heard again.
2. Bluetooth mode
a. The earmuffs will automatically turn to Bluetooth mode when it is
powered on. A voice prompt as well as screen message will come
on as follows:
b. For first time pairing of earmuffs with your smartphone Bluetooth, go to your phone setting
and activate the Bluetooth function. Allows Bluetooth to scan devices in the vicinity and then
select the earmuffs to connect. A voice prompt as well as screen display will indicate successful

USER INFORMATION GUIDE (EZ-1B)
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connection. No pairing is required when you turn on your earmuffs next time. It will remember
to re-connection automatically.
c. You are now ready to enjoy your favourite music from your smartphone. Press “+” and “-“ keys
to toggle between songs in your playlist.
d. To adjust volume, long press the “+” or “-“ button. Use the side rotary knob for auxiliary
volume control and a better auditory effect.
e. To pause, short press the “Phone” key . To resume, press again.
f. To receive a phone call, a voice prompt will alert you of the incoming call. Short press the
“phone” key again to answer the call and start talking. A highly sensitive microphone
embedded inside the earmuffs will pick up your voice.
3. MP3 mode
a. To access MP3, short press key.
b. For first time use, you would need to download your favourite music onto the in-built SD card
before you could enjoy them. Use the mini-USB cable to connect the earmuffs to your
computer and download the music of your choice.
c. To toggle between music/songs, short press “+” and “-“.
d. To adjust volume, long press the “+” or “-“ button. Use the side rotary knob for auxiliary
volume control and a better auditory effect.
e. To pause, short press the “Phone” button . To resume, press again.
4. FM radio mode
a. Short press key to switch to “FM radio” mode.
b. For first time use, short press “Phone” button to start radio station searching and auto-
save functions. Each of the station selected is given a number in the playlist.
c. At the end of the search, press either “+” or “-“ to toggle between stations.
f. To adjust volume, long press the “+” or “-“ button. Use the side rotary knob for auxiliary
volume control and for a better auditory effect.
5. 3.5mm audio input jack
Use the jack to connect the earmuffs to an external device. All other
functions cease as soon as the jack is inserted and the earmuffs will start to
play music/song from the external device. This jack can also be used to play
music/song when the earmuffs’ battery is flat. Maximum input signal is
113mV.

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6. Mini-USB port
Use the mini-USB cable provided for charging the earmuffs’ battery.
Use it too to connect the earmuffs to a computer in order to download music/songs and save
them in the in-built SD card.
Storage
When the earmuff is not in use, store it in such a way that the headband is not stretched and the
cushions are not compressed. Keep the earmuffs dry and clean, store them at normal room
temperature and do not place them in direct sunlight or in hot environment. If the earmuff is to be
stored for a prolonged period of time it is recommended that the batteries be removed to avoid
damaging/corroding the metal contacts in the compartment.
Maintenance
Clean and disinfect the cups, cushions and inserts with mild household soap and water only. Ensure
the cleaning agents used does not have adverse effect to your health and safety. Earmuffs and
cushions in particular may deteriorate with use and should be examined at frequent intervals for
cracking and leakage, for example at the start of every working shift. Do not subject the earmuff to
rough handling, which can damage the electronics or the LCD screen. The cushions and inserts are not
replaceable.
WARNING: The earmuffs must not be immersed in water!
Compatibility
Earmuffs complying with EN352 are of large size.
Materials
Parts
Materials
Parts
Materials
Cups
ABS
Cushions
PU
Headband
Wire arms with TPE
cover
Inserts (foam)
EVA
Headband fork
POM
WARNINGS:
 The user must ensure that the earmuffs:
o Is fitted properly, maintained and adjusted in accordance with instructions contain in this
user instruction guide.
o Is worn at all times in noisy surroundings
o Is inspected regularly for serviceability
 If the recommendations given are not adhered to, the protection afforded by the earmuffs can be
severely impaired.
 These ear-muffs are of large size range. Ear-muffs complying with EN 352-1 are of ‘medium size
range’ or ‘small size range’ or ‘large size range’. ‘Medium size range’ ear-muffs will fit the majority
of wearers. ‘Small size range’ or ‘Large size range’ ear-muffs are designed to fit wearers for whom
‘medium size range’ ear-muffs are not suitable.
 Earmuffs should be worn at all times in noise areas and be fitted prior to entering the noise area.
 The fitting of hygiene covers to the cushions may affect the acoustic performance of the earmuffs.
 This product may be adversely affected by certain chemical substances. Further information
should be sought from the manufacturer.
 Remember that hearing protection can generally shut out external ambient sounds, such as
warning shouts, alarms and other important signals. The audibility of warning signals at a specific

USER INFORMATION GUIDE (EZ-1B)
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workplace may be impaired while during the entertainment facility. You should therefore be
specifically watchful of your surroundings when wearing this hearing protection.
 This hearing protector contains batteries and electrical components that may cause ignition in
flammable or explosive atmospheres. Do not use in environments where sparks may cause a fire
or explosion. Misuse can result in injury or death.
 The performance may deteriorate with battery usage. The battery life time varies depending on
the mode of use and volume output. For FM radio mode usage time is about 100h.
 When calculating the effective attenuation of the hearing protector, consideration should be given
to the output signals of the radio restoration. The calculated total A-weighted sound pressure
level inside the cup should not exceed 85dB.
 The output of the electrical audio circuit of this hearing protector may exceed the daily limit sound
level.
 Dispose of the product and batteries in accordance with national legislation.
 This earmuff is provided with electrical audio input. The wearer should check correct operation
before use. If distortion or failure is detected, the wearer should refer to the manufacturer for
advice.
 User is forewarned that the Bluetooth communication system through the smartphone may not
be suitable for essential safety related communication.
EN352-1 attenuation data
The sound attenuation values for the hearing protector are measured in accordance with
EN24869-1. Please refer to the table below for further information.
F
req
(Hz)
63
125
250
500
1000
2000
4000
8000
M
ean
(dB)
18.6
18.2
21.2
24.9
34.5
32.9
41.0
38.9
S
td dev
(dB)
3.4
2.9
2.8
2.8
3.9
2.2
3.0
3.1
APV (dB)
15.2
15.3
18.4
22.1
30.6
30.7
38.0
35.8
Note: APV = Assumed Protection Value
H = 33 dB, M = 26 dB, L = 21 dB, SNR = 29 dB
Gross weight (excluding batteries) = 362g
EN352-6 electrical input level
Electrical input level (U), mV rms 29,1 51,3 90,4 113,5 160,2
Mean plus one standard deviation A-
weighted diffuse-field related sound
pressure level (SPL) for the sixteen ears
70 75 80 82 85
Maximum auxiliary (AUX) electric input level for which the mean plus one standard deviation A-
weighted diffuse-field related sound pressure level is equal to 82 dB at voltage U = 113 mV rms
A-weighted diffuse-field related sound pressure level for each sample and subject as a function of
input signal level:

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Corrected ATF A-weighted diffuse-field related sound pressure level:
Trouble shooting
If the radio ceased to function please check the following:
 Replace the old batteries with new ones.
 Ensure that the batteries are correctly inserted.
 Ensure the battery is in correct orientation and contacts are good.
 Ensure that there is no moisture build-up inside the earmuffs. If any moisture is found,
remove the inserts and allow the earmuffs to dry overnight.
If the above actions do not help, contact your dealer.
Accessories
1pc of 3.7V Li-Ion rechargeable battery
1pc of 3.5mm audio jack
1pc of mini-USB cable

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Additional information
The following information is available upon request:
 Range of head sizes fitted;
 Detail information contains in this user information sheet;
 Results of tests performed in accordance with this standards;
 The name and country of the test laboratory which performed the testing and the date of
the tests.
Manufacturer information
Name: Hangzhou Haoyue Safety Equipment Manufacturing Co., Ltd
Certification body
Name: INSPEC International Ltd
Address: 56 Leslie Hugh Way, Salford, Greater Manchester, M6 6AJ, United Kingdom
(Notified Body number 0194)
Tel: [phone]
Email: [e-mail]