GREEN DEVIL 2BCH7SHIELDLD Shield LD Hearing Protector Instruction Manual
- May 15, 2024
- GREEN DEVIL
Table of Contents
2BCH7SHIELDLD Shield LD Hearing Protector
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Specifications
- Product Name: SHIELD LD Hearing Protector
- Features: Safety, stable, comfortable
- Battery: 1000mAh (24+ hours operation)
- Charging Time: 2 hours
- Bluetooth: Yes
- Noise-canceling Boom Microphone: Yes
Product Usage Instructions
Fitting
-
The headset is labeled and adjustable for your convenience.
Check the left and right labels of the earmuffs and wear them
correctly. -
Adjust the earcups, headband, and wires for a snug but
comfortable fit. -
Adjust the height range to ensure proper placement on your
ears.
Location of Controls
- Bluetooth Mic
- Charge Port
- LED indicator LEFT side
- LED indicator RIGHT side
- Audio 3.5mm input jack
- Noise-canceling boom microphone
IAL – Intelligent Active Listening
The intelligent active listening function allows users to hear
ambient noise while wearing hearing protection. Rotate the volume
control to adjust the volume up and down. The built-in sound level
limiter ensures safe application by automatically switching off the
gain when ambient noise levels reach 82 dB.
Charging
-
1000mAh battery ensures 24+ hours of operation. Fully charge in
2 hours with the included cable plugged into the Charging
Port. -
LED indicators on the left side show charging status: Solid Red
= Charging, Solid Green = Fully Charged. -
LED indicator on the right side indicates low battery.
Power On/Off
To power on, press and hold the power button for 3.5 seconds. To
power off, repeat the same step. Reset by long-pressing the power
button for 9 seconds in case of system issues.
Bluetooth Pairing
-
After powering on, the headphones will automatically enter
Pairing Mode. -
Open Bluetooth settings on your device, search for SHIELD LD,
pair and connect. -
To clear all connections and enter Pairing Reset mode, press
two specific buttons simultaneously for 2 seconds.
Dual Bluetooth Connection
This product can connect to two devices simultaneously. To
switch devices or connect in Dual Bluetooth mode, perform a pairing
reset and reconnect both devices as needed.
Music Control
To play/pause music, use a short single press on the designated
control button.
FAQ
Q: How do I ensure proper fitting of the headset?
A: Check the left and right labels of the earmuffs, adjust
earcups and headband for a comfortable fit, and make sure the
earcup labels correspond to the sides of your head.
Q: How do I know the charging status of the device?
A: The LED indicators on the left side show charging status:
Solid Red = Charging, Solid Green = Fully Charged. The right side
indicator shows low battery status.
Q: How do I reset the device in case of system issues?
A: Long-press the power button for 9 seconds to reset the
device.
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SHIELD LD
Hearing Protector
protect your hearing
Safety /stable/ comfortable
Fitting
The headset is labeled and adjustable for your convenience. Check the left and
right labels of the earmuffs and wear them correctly.
1
1
Fitting
The headset is labeled and adjustable for your convenience. Check the left and
right labels of the earmuffs and wear them correctly.
2
Adjust the earcups, headband, and wires for a snug but comfortable fit.
3
Adjust the height range
4
Make sure the earcup labels correspond to the sides of your head and place on
your ears.
2
Location of Controls
1. 2.
5. Bluetooth Mic
6. Charge Port
7. LED indicator LEFT side
4
8. LED indicator RIGHT side
1
2
9. Audio 3.5mm input jack
8
3
9 10.Noise-canceling boom microphone
5
10
7 6
3
IAL – intelligent active listening
The intelligent active listening function is equipped with a stepless
environmental noise volume regulation that allows users to hear ambient noise
while wearing hearing protection, facilitating effective communication with
others and timely reaction to warning signals.
Additionally, the built-in sound level limiter ensures safe application by
automatically switching off the gain when ambient noise levels reach 82 dB.
Simply rotate the
(3) to adjust
the volume up and down.
3
4
Charging
1000mAh large battery ensures 24+ hour operation throughout the day. Fully
charged in 2 hours
1
2
Please charge with the included cable by plugging it into the Charging Port (6).
While the cable is plugged into the Charging
Port (6), LED indicator LEFT side (7) will let you know how charged the
Lithium Battery is.
LED indicator LEFT side
L
Solid Red = Charging (Cable Plugged In)
Solid Green = Fully Charged (Cable Plugged In)
LED indicator RIGHT side
R
Solid Red = LOW BATTERY
(Should be charged Immediately ) 5
Power On/Off
Power On: Press and hold
(4) for 3.5 seconds
(You will hear “Power On”)
Power Off: Press and hold
(4) for 3.5 seconds
(You will hear “Power Off”)
LONG PRESS AND HOLD (4) FOR 9 SECONDS TO RESET, IN CASE OF SYSTEM HALTED.
4
6
Bluetooth Pairing
After powering on, the headphones will automatically enter Pairing Mode. (you will hear “PAIRING”)
1
2
Open your Bluetooth settings on your device.
Search “SHIELD LD.” Pair and connect.
Once connected you will hear “CONNECTED.”
Settings
Airplane Mode
Wi-Fi
Bluetooth
off >
Cellular
Personal Hotspot
Bluetooth Bluetooth
MY DEVICES
OTHER DEVICES SHIELD LD
3
Press
(1) and
(2)
simultaneously for 2 seconds
to clear all the connections
and enter into Pairing Reset
mode.You will hear
“DISCONNECTED, PAIRING.”
New devices can be
connected at this point.
1
2
7
This product can connect to two devices at the same time such as your phone and your computer.
If you want to connect to Dual Bluetooth mode,
even if you already have one device connected, you
will need to do pairing reset (
2S )and
then reconnect both devices.
If you want to switch devices for a new dual
Bluetooth connection, it is also recommended to do
pairing reset (
2S )and connect again.
Pairing Reset
Press
(1) and
(2)
simultaneously for 2 seconds to clear all
the connections.
You will hear “DISCONNECTED,
PAIRING.”
8
Music
Play/Pause: Short single press
Previous Track: Double press
(2)
Next Track: Double press
(1)
Music Volume Down: Short single press
(2)
(You will hear “minimum” when turned to minimum volume.)
Music Volume Up: Short single press
(1)
(You will hear “maximum” when turned to maximum volume.)
4
Aware Volume Up/Down: Rotate the
(3) 1
Turn clockwise to hear a “click” to open, then turn to the
loudest IAL volume.
Turn counterclockwise to the lowest IAL volume, tapered
off until hear a “click”.
2 3
9
Phone Calls
Answer/End Call: Short single press (4)
Reject Call: Press and hold
(4) for 2 second
Call back: Double press
(4)
Durable recessed microphones
4
microphones help prevent
damage and reduce wind noise.
10
Phone Calls
Noise-canceling boom microphone Professional noise reduction pickup, ensures
clear communication even in high-noise environments.
11
LED INDICATOR
LED indicator LEFT side (7) 1. Charging. 2. Finish charging.
LED indicator RIGHT side (8)
1. Disconnected. (Blinking at long intervals)
2. Pairing.
(Blinking at short intervals)
3. Connected. (Long bright) 4.No charging use, turn red means low battery. (You will hear “low battery”)
L
R
12
ANSI S3.19-1974 Table (NRR Table)
A1:Frequency,Hz
A2:GrandMeanAttenuation,dB
A3:StandardDeviation,dB
125 250 500 19.9 22.3 27.8
3.7
2.9
2.4
1000 2000 3150 4000 6300 30.8 38.8 44.3 50.0 46.3
2.3
3.8
3.9
3.8
3.1
8000 42.4 4.3
NRR
25
EN 352-1:2002 Table (SNR Table)
B1:Frequency(Hz)
125
250
500
B2:Mf(dB) B3:sf(dB)
17.5
21.4
26.6
4.5
2.5
2.6
B4:APVf
13.0
18.9
24.0
B5: SNR=30dB H=34dB M=27dB L=21dB APVf=MF-SF (dB)
1000 29.3 2.3 27.0
2000 37.6 3.7 33.9
4000 46.4 4.6 41.8
8000 39.6 6.8 32.8
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EN 352-4 Level Dependent Criterion Level
C1:H C2:M C3:L
114 dB(A) 108 dB(A) 94 dB(A)
Audio Input (EN 352-6)
Bluetooth (HFP): The maximum SPL is 76.4 dB(A) at -14 dBFS
Entertainment (EN 352-8)
Bluetooth (A2DP): The maximum SPL is 77.1 dB(A) at -10 dBFS
Models
GREEN DEVIL Shield LD
Important
Please read, understand, and follow all safety information.
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Introduction Thank you for purchasing GREEN DEVIL Shield LD Professional Noise
Isolating Earmuffs. These earmuffs have been specifically designed for use in
noisy environments allowing you to block out much of the surrounding noise
so that you can listen to your music or talk on the phone with less
interruption. This product has been tested and meets the European Safety
Standard EN352-1:2002, RED directive 2014/53/EU, harmonized Standard EN
60065-2014+A11-2017, EN 62479:2020, ETSI EN 300 328 V2.1.1, ETSI EN 301 489-1
V2.1.1, ETSI EN 301 489-17 V3.1.1 and the ANSI standards for a hearing
protector, with a Single Number Rating (SNR) of 30 dB with a Noise Reduction
Rating (NRR) of 25 dB. Full testing details are available in the Noise
Attenuation section of this booklet.
Noise Attenuation APPROVAL GREEN DEVIL Shield LD is tested and approved in
accordance with ANSI S3.19-1974 Specifications and the European Safety
Standard EN 352-1:2002, EN 352-4:2001, EN 352-6:2002, and EN 352-8:2008.
This earmuff is provided with level dependent attenuation. The wearer should
check correct operation before use. If distortion or failure is detected, the
wearer should refer to the manufacturers advice for maintenance and
replacement of the battery.
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ANSI S3.19-1974 The level of noise entering a person’s ear, when GREEN DEVIL
Shield LD headphones are worn as directed, is closely approximated by the
difference between the A-weighted environmental noise level and the Noise
Reduction Rating (NRR). Improper fit of this device will reduce its
effectiveness in attenuating noise. Consult the enclosed instructions for
proper fitting.
A1: Frequency (Hz) A2: Mean Attenuation (dB) A3: Standard Deviation (dB)
Example: 1. The surrounding noise level measured at the ear is 100 dB. 2. The
NRR of GREEN DEVIL Shield LD is 25 dB. 3. The noise level entering the ear is
approximately equal to 75dB.
Please note that the NRR is based on the attenuation of continuous noise and
may not be an accurate indicator of the protection attainable against
impulsive noise, such as gunfire.
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EN 352
This product is certified according to the product standards EN 352-1:2002, EN
352-4:2001, EN 352-6:2002, and EN 352-8:2008.
Green devil safety hereby declares that GREEN DEVIL Shield LD EN 352 conforms
to the regulation (EU) 2016/425 and the directive RED 2014/53/EU which can be
accessed at www.greendevilsafety.com
B1: Frequency (Hz) B2: Mean Attenuation (dB) B3: Standard Deviation (dB) B4:
Assumed Protection Value (APV) (dB) B5:
H = Hearing protection estimation for high frequency sounds (f 2000Hz) M =
Hearing protection estimation for medium frequency sounds
(500 Hz < f < 2000Hz) L = Hearing protection estimation for low frequency
sounds(f 500Hz)
Criterion level is the sound pressure level in dB(A) of the noise environment
resulting in 85 dB(A) effective to the ear while wearing hearing protectors.
Three different criterion levels are defined related to the frequency content
of the noies.
C1: H = criterion level for high-frequency noise C2: M = criterion level for
medium-frequency noise C3: L= criterion level for low-frequency noise
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IAL – intelligent active listening
The intelligent active listening function is equipped with a stepless
environmental noise volume regulation that allows users to hear ambient noise
while wearing hearing protection, facilitating effective communication with
others and timely reaction to warning signals.
Additionally, the built-in sound level limiter ensures safe application by
automatically switching off the gain when ambient noise levels reach 82 dB.
Controlling this function is very easy, just rotate the decrease.
(3) to control the switch and volume increase or
Cleaning and Maintenance Clean your GREEN DEVIL Shield LD by gently wiping
them with a clean, damp cloth with mild soap. Do not immerse the hearing
protector in water. Do not use abrasive cleaning solvents to clean the hearing
protector.
If the hearing protector gets wet from sweat or rain, please discontinue use
and turn the earmuff outwards and allow to dry.
The ear cushions and foam liners should be regularly inspected for
deterioration, cracking, or other damage.
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Materials Ear Cushion: PU + Memory Foam Casing: ABS Key Pad: Silicon Headband:
Stainless Steel + PU Headband Bracket: ABS
This product comes with a 1000mAh Lithium Battery Pack. The Battery Pack can
be recharged by plugging the one end of the included cable into a USB outlet
and the other end into the product`s charging port(6) located underneath on
the bottom of the left earcup.
Automatic Power Off GREEN DEVIL Shield LD will turn off automatically after 4
hours of use.
WARNINGS This device complies with part 15 of the FCC Rules. Operation is
subject to the condition that this device does not cause harmful interference
this device may not cause harmful interference, and this device must accept
any interference received, including interference that may cause undesired
operation.
Any changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
19
NOTE: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular
installation.
If this equipment does cause harmful interference to radio or television
reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:
— Reorient or relocate the receiving antenna.
— Increase the separation between the equipment and receiver.
— Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected. — Consult the dealer or an experienced
radio/TV technician for help. The device has been evaluated to meet general RF
exposure requirement. The device can be used in portable exposure condition
without restriction.
Recommendations The wearer should ensure the product is properly cleaned and
dry before and after use. Storage should be in a clean and dry location
between -20 °C and 50 °C. The battery should not be fully discharged before
long term storage.
The wearer should ensure that: The hearing protector is fitted, adjusted, and
maintained in accor dance with the manufacturer’s instructions. The hearing
protector is worn at all times in noisy surroundings. The hearing protector is
regularly inspected for serviceability. 20
If these recommendations are not adhered to, the protection afforded by the
hearing protector will be severely impaired.
The mean mass of the product is 365g. Date of Obsolescence: 3 years from
purchase date. Not to be used in Explosive Atmospheres.
Additional Notes GREEN DEVIL Shield LD is compliant with Bluetooth We do not
guarantee compatibility of all functions on every Bluetooth®-enabled device.
Please check your device’s user manual for compatibility and functionality.
Please note, the hearing protector provides an entertainment audio facility.
The ear-muff provides audio signal sound pressure level limitation which
limits the entertainment audio signal to 82 dB(A) effective to the ear. This
limit is maintained for bluetooth signal inputs which are standard to the
Bluetooth A2DP, HFP, and HSP specifications. There is no analog line input on
this product.
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`s advice. For additional information about
GREEN DEVIL Shield LD please visit www.greendevilsafety.com. For additional
information or questions about GREEN DEVIL products or spares and accessories,
please contact our support team.
The following information shall be available from the manufacturer on request:
a) results of tests performed in accordance with this standard; b) the name
and country of the test laboratory which performed the tests specified and the
date of the tests.
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