Maytel HELMET CLIP INTERCOM User manual

Copyright ⓒ2021. Lab-T, Inc.
User Manual

Ver.10503MJB
USER'S MANUAL FOR
HELMET CLIP INTERCOM
PerfectwirelessIntercomsolution for
Helmet-wearingworkers
Maytel Co., Ltd.

TABLE OF CONTENTES
page 1HC-2.4G User’s Manual


2
2
2
2
3
4, 5
6
7, 8
8
9, 10
10
11-16
11
12
12
12, 13
13
14
14, 15
15
16
16,17
17
18
19
20
20
20
1. General Information
1.1Introduction
1.2MainFeature
1.3PackageComponents
1.4OptionalAccessories
2. Controlsand Indicators
3. Accessoriesand Howto Install
4. RMMode
4.1OperationMode
5. S9 Mode
5.1OperationMode
6. Howto Use
6.1Functions
6.2PowerOn/O
6.3VolumeAdjustment
6.4 Channel Selection
6.5ID Selection
6.6 Side ToneSelection
6.7MicrophoneSensitivityLevelSelection
6.8SecurityCodeSelection
6.9Roaming Setting
6.10 OperationModeSelection
6.11 VOXSelection
7. Magnetic ChargingConnectorRemover
8. Speci cation
9. Declarationof Conformity
10. Warranty
11. WasteDisposal

1. General Information
page 2 HC-2.4G User’s Manual
1.1 Introduction
"HELMET CLIP INTERCOM" is the most advanced and compact
hands-free wireless intercom device that can be equipped to the
helmet, which frees the users' hands and provides reliable full-duplex
communication allowing up to 10 users to speak simultaneously.
1.2 Main Feature



Support2professionalmodes and directly selectthe optimized mode
accordingto theenvironmentof the eld.
Worldwidecompatible ISM band.
Realized communicationbetween maximum9xedusers +Anyone
out of unlimited participants
-Any-one participantcan participateintothe communicationby
pressingTALKbuttonwhile the restmembersarelistening
-Another participantwhodesiresto talk can participateby pressing
TALKbuttononly when the prior speakerhas releasedthe button.
Crystalclear sound quality,loud enough audio output and super
dynamic noise cancellation morethan 95dB.
Longenough talk distance through2professionaloperatingmodes
thatcan be directly selectedin the eld.
IndividualPINencryptionthatcan be set up by each groupand clear
LCDdisplayshowingChannel &ID number on the same screen.
Fullymet IP54 waterproofincluding strongand ruggedmechanism.
Separable clipforinstallation to the helmet.

2. Controls and Indicators
page 4 HC-2.4G User’s Manual
Power Button
Up Button
TALK Button
MODE Button
Belt Clip
MIC Jack USB Jack Headset Jack
LCD
Antenna
Down Button

page 5 HC-2.4G User’s Manual
Power Button
Press and hold the Power button for a second to turn the device
power On/O
MODE Button
Select Channel number, ID number, Side Tone On/O,
Microphone sensitivity level, and Wireless alarm
Up Button
Increase Volume level, Channel number, and ID number etc. in each
mode
Down Button
Decrease Volume level, Channel number, and ID number etc. in each
mode
TALK Button
Talk and Mute On/O
USB Jack
3.5mm headset contact
MIC Jack
Headset Jack
Microphone contact
LCD
Indicate current status and setting

USB portforrmwareupgrade (No USB charging function)

How to install Belt Clip How to install Boom Microphone
Push in the Belt Clip to the back side
of HELMET CLIP INTERCOM until a
clicking sound occurs
1. Plug in the Boom Microphone to the
MIC jack of HELMET CLIP INTERCOM.
At this time, the connector and the
groove of the plug must be properly
tted.
2. Put in the aluminum xing equipment
and turn it clockwise to nish installation.
page 6
3. Accessories and How to Install
HC-2.4G User’s Manual

page 7 HC-2.4G User’s Manual
Figure 1 Transmission of beacon/voice signal from Master
Beacon Signal
Slave
Slave
Slave
Voice Signal
Slave
Main Master Sub Master
Subgroup M Subgroup S
4. RM Mode
RM operatesas MainMaster,Sub Master,and Slavedepending
on the ID setting of the device.MainMaster sends beaconsignalsfor
groupcommunicationas shownin the Figure1.
Sub Master receivesthe beaconsignalfromthe MainMaster and sends
it back to SubgroupS. Slavesworkin synchronizationwith beacon
signalsfromthe Main/SubMasters.
MainMaster relaysthe voicereceivedfromthe Subgroup M to the Sub
Master.Sub Master send this relayedvoiceto the SubgroupS.
Sub Master relaysthe voicereceivedfromthe Subgroupto the Main
Master.TheMainMaster sends this relayedvoiceto the SubgroupM.

Slave devices automatically switch between Subgroup M and Subgroup
S to synchronize and send/receive voices.
As shown in the Figure 1, the voice relaying of the Main Master and Sub
Master can expand the coverage distance of wireless communication.
Table 1 Operation Mode
ID Master/Slave ID status TALK Button
4.1 Operation Mode
1. ID of the device is assigned from 0~9, 10(Listen Only).
2. ID 0 works as the Main Master as shown in Table 1.
Must be only one in the group .
3. ID 1 works as the Sub Master as shown in Table 1.
Must be only one in the group.
4. The rest of the IDs work as Slaves.
IDs 0~8 should be only one in each group.
5. ID 9 is shared. It’s number is unlimited.
6. ID 10 is Listen Only.
Multiple Listen Only devices can exist in the group.
- Press TALK button to toggle the Talk state, which means Talk O when it is On, and Talk On when it is O.
- Device ID 9 can send the voice by pressing the button when using the external PTT.
0
1
2
3
4
5
6
7
8
9
10
Main Master
Sub Master
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
TX/RX/Relay Voice
TX/RX /Relay Voice
Fixed TX/RX of ID 2
Fixed TX/RX of ID 3
Fixed TX/RX of ID 4
Fixed TX/RX of ID 5
Fixed TX/RX of ID 6
Fixed TX/RX of ID 7
Fixed TX/RX of ID 8
ID 9 ; Shared
Listen Only
Change Talk State
Change Talk State
Change Talk State
Change Talk State
Change Talk State
Change Talk State
Change Talk State
Change Talk State
Change Talk State
Change Talk State
-
page 8 HC-2.4G User’s Manual


As shown in the Figure 2, the Master relays the voice signal from a Slave
to other Slaves. Therefore, the coverage distance of wireless
communication can be expanded in the case where the Slaves are
centered around the Master.
Figure 2 Transmission of beacon/voice signal from Master
page 9 HC-2.4G User’s Manual
Beacon Signal
Voice Signal
Slave
Slave
Slave Slave
Master
5. S9 Mode
S9 operatesas MainMaster,Sub Master,and Slavedepending
on the ID setting of the device.
MainMaster sends beaconsignalsforgroupcommunicationas shown
in the Figure2, and the Slavesoperatein synchronizationwith beacon
signals.
Voicechannels in agroupareassignedto the deviceswith ID 0~8.
Wirelesslytransmittedvoicesfromeach devicearereceived
simultaneously at the terminal end frommaximum of 9channels.
Thesesimultaneous voicesaremixedwithin the deviceat the terminal
end and heardas the nal voice.

page 10 HC-2.4G User’s Manual
Table 2 Operation Mode
ID Master/Slave ID Status TALK Button
5.1 Operation Mode
1. ID of the device is assigned from 0~8, 9(Listen Only).
2. ID M works as the Main Master as shown in Table 2. Must be only one
in the group.
3. The rest of the IDs work as Slaves. Devices with IDs 0~7 are xed.
Each should be only one in the group.
4. ID 8 is Shared. It’s number is unlimited.
5. ID 9 is Listen Only. There can be multiple Listen Only devices in the
group.
- Press TALK button to toggle the Talk state, which means Talk O when it is On, and Talk On when it is O.
- Device ID 8 can send the voice by pressing the button when using the external PTT.
0
1
2
3
4
5
6
7
8
9
Master
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Fixed TX/RX of ID 0
Fixed TX/RX of ID 1
Fixed TX/RX of ID 2
Fixed TX/RX of ID 3
Fixed TX/RX of ID 4
Fixed TX/RX of ID 5
Fixed TX/RX of ID 6
Fixed TX/RX of ID 7
ID 8 ; Shared
Listen Only
Change Talk State
Change Talk State
Change Talk State
Change Talk State
Change Talk State
Change Talk State
Change Talk State
Change Talk State
Change Talk State
-

6. How to Use
Figure 3 Order of the setting values in NORMAL mode
when short press the MODE button
6.1 Functions
There are 2 modes in operation mode, NORMAL mode and SETTING
mode. The default mode is NORMAL when turn on the power.
Short press the MODE button to view each setting value in NORMAL
mode. Setting values are shown in the order of CH-> ID-> SIDE TONE->
MIC GAIN-> VOX as shown in Figure 3.
Long press MODE button to go to SETTING mode to change the
setting values such as Channel and ID.
page 11 HC-2.4G User’s Manual
CH
ID
SIDE TONE
SO/SF
MIC GAIN
(C1~C8)
VOX SETTING
(AF~A4)

page 12 HC-2.4G User’s Manual
6.2 Power On/O
Press and hold the "Power" button for a second to turn the device power
on/o.
6.3 Volume Adjustment
Volume Level appears on the top of the LCD screen when turn on the
power.
In NORMAL mode, adjust the volume to the desired level by pressing
Up/Down button on the left side of the device.
Volume can be set from 0 ~ 5 [Default Level: 3]
Volume adjustment function to let the user to change the volume
when needed.
6.4 Channel Selection
Turn on the power of the device.
Long press the MODE button then the LCD screen becomes SETTING
mode and blinks.
Press Up/Down button on the left side of the device to set the desired
Channel.
Volume adjustment function to let the user to change the volume
when needed.
- Changed volume maintains even when the power is O.
- Speaker is in Mute state with Level 0.
- Channel should be identical for all the devices to communicate in each group.
- Wireless communication does not work when changed to SETTING mode.

page 13 HC-2.4G User’s Manual
6.5 ID Selection
Turn on the power of the device.
Long press the MODE button to go to SETTING mode.
Short press MODE button to go to ID Setting screen. blinks..
Press Up/Down button to set to the desired ID.
RM mode ID setting
- ID can be set to 00~10.
- ID 0 is set as a Master ; Must be only one in a group.
- ID 1 is set as a SubMaster ; Must be only one in a group.
- IDs 2~8 are set as Slaves each assigned with xed Channel
; Must not be overlapped within a group
- ID 9 is Shared. It’s number is unlimited.
- ID 10 is set as Listen Only Slave.
; Multiple devices can be set as ID 9,10 in a group
S1 mode ID setting
- ID can be set to 00~09.
- ID 0 is set as a Master ; Must be only one in a group.
- IDs 1~7 are set as Slaves each assigned with xed Channel
; Must not be overlapped within a group
- ID 8 is Shared. It’s number is unlimited.
- ID 9 is set as Listen Only Slave.
; Multiple devices can be set as ID 8,9 in a group
ID setting function to let the user to change ID when needed.
Channel can be set from 0~39 .
Long press the MODE button to nish the setting.

6.6 Side Tone Selection
Turn on the power of the device.
Long press the MODE button to go to SETTING mode.
Short press MODE button 2 times to go to Side Tone Setting screen.
The user can turn Side Tone On(SO) or O(SF) by Up/Down buttons.
Side Tone can be turned On/O
Long press the MODE button to nish the setting.
page 14 HC-2.4G User’s Manual
Long press the MODE button to nish the setting.
6.7 Microphone Sensitivity Level Selection
Turn on the power of the device.
Long press the MODE button to go to SETTING mode.
Short press MODE button 3 times to go to MIC level setting screen.
Adjust the MIC gain setting by Up/Down buttons.
MIC gain level can be set from 1~8.
MIC gain Level can be adjusted when using.

page 15 HC-2.4G User’s Manual
~
Long press the MODE button to nish the setting.
6.8 Security Code Selection
Turn on the power of the device.
Long press the MODE button to go to SETTING mode.
Short press MODE button 4 times to go to MIC level setting screen.
The user can change the Security Code by Up/Down buttons.
Security Code is composed of 4 digits and each digit can be set as
0~9, A, b, C, d, E, F.
Security Code can be set one digit by one digit. Short press MODE
button to move to the next digit. 1, 2, 3, 4 on the left indicates which
digit the code is located. The right indicates hexadecimal number.
For example, to set the code as 0xFC10, it should be set in the
following order:
1F -> 2C -> 31 -> 40.
Security Code can be modied by the user.
Long press the MODE button to nish the setting.

page 16 HC-2.4G User’s Manual
- Set the Side Tone in Talk sate. Side Tone is O when the device is not in Talk state.
- Both CH and Security Code should match to enable the communication between the devices.
6.9 Roaming Setting
Roaming function can be set by the user. It can be set as Auto Roaming,
Manual Roaming, Master Fix, Sub master Fix.
Roaming function Description
6.10 Operation Mode Selection
Turn on the power of the device.
Long press the MODE button to go to SETTING mode.
Short press MODE button 8 times to go to Operation mode selection
setting screen.
Press Up/Down buttons to select the desired application.
; Operation Mode
- PH: indicates RM Mode.
- PS: indicates S9 Mode.
Long press the MODE button to nish the setting.
The power automatically goes O once the Operation Mode is
changed. The device will be booted with the changed application
when turn on the power afterwards.
Operation Mode can be selected to boot the device with the selected
one of the 2 applications.
H0
H1
H2
H3
Auto Roaming
Manual Roaming. Short press
Power button to manually change
connection between Master and
Sub master
Master Fix
Sub master Fix

6.11 VOX Selection
Turn on the power of the device.
Long press the MODE button to go to SETTING mode.
Short press MODE button 9 times to go to Operation mode selection
screen.
Default setting of VOX function is O.
Adjust to the desired sensitivity by Up/Down buttons.
- AF: Turns O VOX function.
- A0~A4: Indicates sensitivity. A0 is the most sensitive, and A4 is the
least sensitive level.
Long press the MODE button to nish the setting.
VOX can be set with this function.
VOX function operates on devices with ID 0 ~ ID 8
page 17 HC-2.4G User’s Manual
- Operation mode selection should be done after all the applications of 2 modes (RM, S9) are downloaded.
If not, the device might not be booted properly.
- 2 applications are RM and S9. Refer to the manual of each application for detailed explanation.

Put the remover into the gap between the magnetic charging
connector and the device.
Move the remover for about 5 times with slight force, then the
connector will be plugged out of the device.
* Beware; The remover might be broken when too much force is applied.
page 18
7. Magnetic Charging Connector Remover
HC-2.4G User’s Manual

Dimension
100 x 69 x 32 mm
Weight
98g
Frequency Range
Radio Interface
GFSK Modulation
Voice Codec
16bit/8KHz
Tx Max Output Power
TBD mW
Rx Sensitivity
-95dBm
Distance Range(LOS)
TBD
Frequency response
TBD Hz ~ TBD kHz
Power Supply
Li-ion Battery @3.7V/ 1,100 mA
Antenna
Internal
8. Specication
page 19 HC-2.4G User’s Manual
Environmental Rating
IP54
ISM 902.5MHz ~ 927 MHz