Sena SMH3 User manual


Bluetooth® Headset & Intercom
for Scooters and Motorcycles
User's Guide
www.SenaBluetooth.com

SMH3
CONTENTS
1. INTRODUCTION ..................................................................................3
2. PACKAGE CONTENTS ........................................................................4
3. GETTING STARTED .............................................................................5
Installing the SMH3 on Your Helmet ............................................................. 5
Powering On ................................................................................................. 6
Powering Off ................................................................................................. 6
Charging the SMH3 ...................................................................................... 6
Checking Battery Level ................................................................................ 7
Adjusting the Volume Level .......................................................................... 8
Function Priority ............................................................................................ 8
Fault Reset .................................................................................................... 8
4. OPERATION QUICK REFERENCE ......................................................9
5. PAIRING AND USING THE SMH3 WITH BLUETOOTH DEVICES ....11
Mobile Phone Pairing ................................................................................. 11
Multipoint Mobile Phones Pairing ............................................................... 11
Bluetooth Stereo Device Pairing ................................................................. 12
Bluetooth GPS Navigation Pairing .............................................................. 12
Mobile Phone Call Making and Answering ................................................ 15
Stereo Music ............................................................................................... 15
6. INTERCOM CONVERSATION ............................................................16
Pairing with Other SMH3 Headsets for Intercom Conversation ................. 16
Starting and Ending Intercom Conversation .............................................. 16
Intercom and Mobile Phone Call ................................................................ 16
Intercom Failure .......................................................................................... 17
Intercom Reconnection .............................................................................. 17
7. SMH3 CONFIGURATION SETTING ...................................................17
Enabling/Disabling Voice Activated Phone Answering .............................. 18
Enabling/Disabling Voice Prompts ............................................................. 18
Delete All Bluetooth Pairing Information ..................................................... 18
Reset to Factory Default Setting ................................................................. 19
Exit Voice Configuration Menu ................................................................... 19
8. FIRMWARE UPGRADE .......................................................................20
BATTERY INFORMATION .........................................................................20
MAINTENANCE AND CARE ......................................................................21
DISPOSAL..................................................................................................21
CERTIFICATION AND SAFETY APPROVALS ..........................................22
FCC Compliance Statement ....................................................................... 22
FCC RF Exposure Statement ...................................................................... 22
FCC Caution ...............................................................................................22
CE Declaration of Conformity ..................................................................... 22
Industry Canada Statement ....................................................................... 23
Bluetooth License ....................................................................................... 23
WAIVER AND GENERAL RELEASE .........................................................23
Two-year Limited Warranty ......................................................................... 25
Limitation of Liability ................................................................................... 25
Return for Full Refund ................................................................................ 26
WARNING ..................................................................................................26

SMH3
3
English
1. INTRODUCTION
Thank you for choosing the Sena SMH3, Bluetooth Headset and Intercom
for Scooters and Motorcycles. With the SMH3, you can call handsfree on
your Bluetooth mobile phone, listen to stereo music or GPS navigation
voice instructions via Bluetooth, and have intercom conversations in full
duplex with a passenger or other riders.
The SMH3 is compliant with the Bluetooth specification 3.0 supporting
the following profiles: Headset Profile, Hands-Free Profile (HFP),
Advanced Audio Distribution Profile (A2DP), and Audio Video Remote
Control Profile (AVRCP). Please confirm compatibility with other devices
with the manufacturers.
Please read this user guide carefully before using the headset. Also visit
www.SenaBluetooth.com for the latest version of the user guide and for
additional information related to Sena Bluetooth products.
1. INTRODUCTION
The SMH3 includes the following features:
 Bluetooth handsfree for Bluetooth mobile phones
 Bluetooth stereo headset for Bluetooth stereo devices such as MP3
players
 Bluetooth stereo headset for Bluetooth GPS navigations
 Bluetooth intercom up to 200 meters (220 yards)*
 Easy two-button operation
 Installation friendly unibody design
 Firmware upgradeable
Key Specifications:
 Bluetooth 3.0
 Supporting profiles: Headset Profile, Hands-Free Profile (HFP),
Advanced Audio Distribution Profile (A2DP), Audio Video Remote
Control Profile (AVRCP)
* in open terrain

SMH3
4
2. PACKAGE CONTENTS
Status LED
Speakers
Microphone
(-) Button
(Intercom Button)
(+) Button
(Phone Button)
Pin-hole
Reset Button
DC Power Charging &
Firmware Upgrade Port
SMH3 Headset
2. PACKAGE CONTENTS
USB Power & Data Cable
Microphone Sponges Velcro Pads
for Speakers

SMH3
5
English
3. GETTING STARTED
Installing the SMH3 on Your Helmet
1. Place the speaker-microphone unit in the helmet along with the velcro
pads, centered to your ear, in the ear pockets of the helmet. Locate
the boom microphone as closely as possible to your mouth when
wearing the helmet.
2. Hide the wire under the helmet padding after the installation.
3. GETTING STARTED
1
2

SMH3
6
3
4
Powering On
Press and hold the (+) Button and the (-) Button at the same time for 1
second to power on. The blue LED turns on and you will hear ascending
beeps and “Hello”.
Powering Off
Press the (+) Button and the (-) Button at the same time. The red LED
turns on for about 2 seconds until it turns off completely and you will hear
“Goodbye” and descending beeps.
Charging the SMH3
You can charge the SMH3 by connecting the supplied USB power &
data cable into a computer USB port or USB wall charger. You can use
any standard micro-USB cable to charge the SMH3. The LED turns red
while charging, and turns blue when the headset is fully charged. It
takes about 2.5 hours to fully charge.

SMH3
7
English
Checking Battery Level
You can check the battery level in two different ways when the headset
is powering on.
LED Indicator
When the headset is powering on, the red LED flashes rapidly indicating
the battery level.
LED Status
4 flashes High, 70~100%
3 flashes Medium, 30~70%
2 flashes Low, 0~30%
Voice Prompt Indicator
When you power on the headset, keep pressing and holding the (+)
Button and (-) Button simultaneously for about 3 seconds until you hear
three high tone beeps. Then you will hear a voice prompt indicating the
battery level. However, if you release the buttons as soon as the headset
turns on, you will not hear the voice prompt for the battery level.
Note:
1. The USB power & data cable is also used for firmware upgrade of the SMH3.
2. The USB wall charger is not included in the package. Any 3rd party USB
charger can be used with Sena products if the charger is approved by either
FCC, CE, IC, or other locally approved agencies that Sena accepts. Please
contact Sena regarding locally approved agencies Sena accepts.

SMH3
8
Low Battery Warning
When the battery is low, the blinking blue LED in stand-by mode turns to
red and you will hear mid-tone triple beeps and a voice prompt saying
“Low battery”.
Adjusting the Volume Level
You can easily adjust the volume by pressing the (+) Button or the (-)
Button. You will hear a beep when the volume reaches maximum or
minimum level. The volume is set and maintained independently at
different levels for each audio source even when you turn off and on
the headset. For example, once you set the volume for mobile phone
handsfree, it will not change even if you adjust the volume when you
hear Bluetooth MP3 music. So you can always maintain the preferred
optimum volume level for each audio source.
Function Priority
The SMH3 operates in the following order of priority:
(Highest) Mobile Phone
Intercom
(Lowest) Bluetooth Stereo Music
A lower priority function is always interrupted by a higher priority
function. For example, stereo music is interrupted by an intercom call,
and intercom conversation is interrupted by an incoming mobile phone
call.
Fault Reset
When the SMH3 is not working properly or is in faulty status for any
reason, you may reset by pushing the pin-hole reset button on the left
speaker unit. Insert a paper clip into the reset pin-hole and press and
hold the reset button for a second with light pressure. The SMH3 will be
switched off after which time, you have to turn the system back on and
try again. However, this will not restore the headset to factory default
settings.

SMH3
9
English
4. OPERATION QUICK REFERENCE
Function Operations
Power
On/Off
1 sec. 1 sec.
+
Volume
Adjustment
1 press 1 press
or
Intercom
Pairing
pairing
AB
1) 5 sec. 5 sec.
2) 1 sec.
4. OPERATION QUICK REFERENCE
Function Operations
Bluetooth
Pairing
(Phone, MP3,
GPS)
1)
Sena SMH3
Sena SMH3 v1.0
5 sec.
2) Sena SMH3
Sena SMH3 v1.0
Select
3)
Sena SMH3
Sena SMH3 v1.0
Enter PIN
Start & End
Intercom
Conversation
1 sec.

10 sec.

SMH3
10
Function Operations
Music
1 sec.
2 sec.
2 sec.
Function Operations
Mobile
Phone
Answer
or
1 press
End
2 sec.
Voice
Command
3 sec.
3 sec.
Reject
2 sec.

SMH3
11
English
5. PAIRING AND USING THE SMH3 WITH BLUETOOTH DEVICES
Mobile Phone Pairing
1 Turn on the SMH3 and press and hold the (+) Button for 5 seconds
until the LED flashes red and blue alternately and you hear multiple
beeps. You will hear a voice prompt saying “Phone pairing”.
2. Search for Bluetooth devices on your mobile phone. Select the Sena
SMH3 in the list of the devices detected on the mobile phone.
3. Enter 0000 for the PIN. Some mobile phones may not ask for the PIN.
4. The mobile phone confirms that pairing has completed and the SMH3
is ready to use. You will hear a voice prompt from the SMH3 saying
“Your headset is paired”.
5. If the pairing process is not completed within three minutes, the
SMH3 will return to stand-by mode.
5. PAIRING AND USING THE SMH3 WITH
BLUETOOTH DEVICES
Multipoint Mobile Phones Pairing
You can simultaneously use two mobile phones which use the mobile
phone profile.
1. You can pair the first mobile phone to the SMH3 by following the
simple procedures in “Mobile Phone Pairing”.
2. To pair the second mobile phone, press and hold the (-) Button for 5
seconds until the red LED is rapidly flashing and you hear multiple
beeps.
3. Within 2 seconds, press and hold the (+) Button for 1 second, then
the LED turns to blue flashing and the beeps turn to high tone double
beeps. You will hear a voice prompt saying “Multipoint pairing”.
4. Search for Bluetooth devices on your mobile phone. Select the Sena
SMH3 in the list of the devices detected on the mobile phone.
5. Enter 0000 for the PIN. Some mobile phones may not ask for the PIN.
6. The mobile phone confirms that pairing has completed and the SMH3
is ready to use. You will hear a voice prompt from the SMH3 saying
“Your headset is paired”.

SMH3
12
SMH3
1st Mobile Phone 2nd Mobile Phone
Mobile Phone
Pairing
HFP
+
A2DP HFP
Multipoint
Pairing
Multipoint Mobile Phones Pairing
Bluetooth Stereo Device Pairing
1. If the Bluetooth stereo device is integrated with the mobile phone such
as smartphones, you don’t need to pair the SMH3 with it separately.
When the SMH3 is paired with the mobile phone, it is also paired as a
stereo music device.
2. If you have a stand alone Bluetooth stereo device, follow the pairing
procedure separately. The procedure is the same as the procedure of
“Mobile Phone Pairing”.
Note:
1. If Bluetooth connection between the headset and a mobile phone is
disconnected, press and hold the (+) Button for 3 seconds to recover the
Bluetooth connection immediately.
2. If Bluetooth connection between the headset and a media player is
disconnected, press and hold the (+) Button for 1 second to recover the
Bluetooth connection and play.
Bluetooth GPS Navigation Pairing
You can listen to voice instruction from Bluetooth GPS navigation. Some
GPS systems use mobile phone profile (HFP, Hands-Free Profile) and
others use stereo music profile (A2DP, Advanced Audio Distribution
Profile). Most motorcycle specific GPS systems use mobile phone
profile for turn-by-turn voice instruction. You can simultaneously use a
mobile phone and a GPS which uses mobile phone profile by one of the
following procedures.

SMH3
13
English
Multipoint GPS Pairing
If you use GPS only for turn-by-turn voice instructions, not for Bluetooth
stereo music streaming, multipoint pairing is recommended for the GPS
connection. Multipoint Bluetooth pairing allows the SMH3 to connect two
HFP devices at the same time: mobile phone and GPS navigation. Follow
the steps below to pair the GPS using the multipoint pairing.
1. Turn on the headset and press and hold the (-) Button for 5 seconds
until the red LED is rapidly flashing and you hear multiple beeps.
2. Within 2 seconds, press and hold the (+) Button for 1 second, then
the LED turns to blue flashing and the beeps turn to high tone double
beeps. You will hear a voice prompt saying “Multipoint pairing”.
3. Search for Bluetooth devices on the GPS navigation screen. Select
the Sena SMH3 in the list of the devices detected on the GPS.
4. Enter 0000 for the PIN.
5. The GPS confirms that pairing has completed and the SMH3 is ready
to use. You will hear a voice prompt from the SMH3 saying “Your
headset is paired”.
6. If the pairing process is not completed within three minutes, the
SMH3 will return to stand-by mode.
The pairing diagram for multipoint GPS pairing is shown in the figure
below.
GPS Navigation
SMH3
Mobile Phone
Mobile Phone
Pairing
HFP
+
A2DP HFP
Multipoint
Pairing
Multipoint GPS Pairing

SMH3
14
GPS Pairing as Mobile Phone
If GPS is not only used for turn-by-turn voice instructions but also is your
preferred Bluetooth stereo music source, you can pair the GPS to the
SMH3 by following the simple procedures in “Mobile Phone Pairing”.
When you do this, the SMH3 thinks the GPS is a mobile phone. But the
SMH3 can directly pair an additional mobile phone.
Note:
You have to use a motorcycle specific GPS which transmits turn-by-turn
voice instruction to the headset by Bluetooth. Most automotive GPS systems
don’t have this feature.
GPS Navigation Mobile Phone
SMH3
HFP
+
A2DP
HFP
Multipoint
Pairing
Mobile Phone
Pairing
GPS Pairing as Mobile Phone

SMH3
15
English
Mobile Phone Call Making and Answering
1. When you have an incoming call, simply press the (+) Button to answer
the call.
2. You can also answer the incoming call by loudly speaking any word
of your choice if Voice Activated Phone Answering, VOX phone is
enabled. (Refer to “Enabling/Disabling Voice Activated Phone Answering”
for details.)
3. To end a call, press and hold the (+) Button for 2 seconds until you
hear a mid-tone single beep, or wait for the called person to end the
call.
4. To reject a call, press and hold the (-) Button for 2 seconds until you
hear a beep while the phone is ringing.
5. There are several ways to make a phone call:
 Enter numbers on your mobile phone keypad and make a call.
Then the call is automatically transferred to the headset.
 Press and hold the (+) Button for 3 seconds in stand-by mode
until you hear a high tone single beep to activate the voice dialing
of your mobile phone. For this, the voice dialing feature must be
available on the mobile phone. Refer to your mobile phone manual
for further instruction.
 To redial the last number, press and hold the (-) Button for 3
seconds in stand-by mode until you hear a high tone single beep.
You will hear a voice prompt saying “Last number redial”.
Note:
1. If you are using multipoint mobile phone connection and you have an
incoming call from the second phone during the call of the first phone, then
you may still receive the call from second phone. In this case, the call from
the first phone is on waiting mode. If you end a call, then it will automatically
guide you to the first phone call.
2. If you are using multipoint connection of mobile phone and GPS, you may not
listen to the GPS voice instruction during the phone call.
Stereo Music
You can listen to stereo music by Bluetooth wireless stereo. The Bluetooth
audio device must be paired with the SMH3 by following the “Bluetooth
Stereo Device Pairing” instructions. The SMH3 supports the Audio/Video
Remote Control Profile (AVRCP), so if your Bluetooth audio device also
supports the AVRCP, you can use the SMH3 to remotely control music
playback. So, you can not only adjust the volume but also use the
functions such as play, pause, track forward and track backward.
 To adjust the volume, press the (+) Button or the (-) Button.
 To play or pause music, press and hold the (+) Button for 1 second
until you hear a double beep.
 To track forward or track back, press and hold the (+) Button or the (-)
Button for 2 seconds until you hear a double beep.

SMH3
16
6. INTERCOM CONVERSATION
Pairing with Other SMH3 Headsets for Intercom
Conversation
The SMH3 can be paired with another headset for Bluetooth intercom
conversation.
1. Turn on the two SMH3 headsets (A and B) that you would like to pair
with each other.
2. Press and hold the (-) Button of the headset A and B for 5 seconds
until the red LEDs of both units start to flash rapidly. You will hear a
voice prompt saying “Intercom pairing”.
3. Simply press the (-) Button of either of the two headsets A or B (It
doesn’t matter that you choose A or B) and wait until the LEDs of
both headsets turn to blue and intercom connection is automatically
established. The two SMH3 headsets A and B are paired with
each other for intercom conversation. If the pairing process is not
completed within one minute, the SMH3 will return to stand-by mode.
6. INTERCOM CONVERSATION Starting and Ending Intercom Conversation
1. You can start an intercom conversation with your intercom friend by
pressing and holding the (-) Button for 1 second.
2. To terminate an intercom conversation, press and hold the (-) Button
for 1 second again.
Intercom and Mobile Phone Call
1. When you have an incoming mobile phone call during an intercom
conversation, you will hear a ring tone. You can choose whether to 1)
answer the mobile phone call and stop the intercom conversation, or
2) reject the phone call and stay on the intercom conversation.
 To answer the phone call and stop the intercom conversation, press
the (+) Button. When you hang up the phone call, the intercom will
automatically be recovered.
 To reject the phone call and stay on the intercom conversation,
press and hold the (-) Button for 2 seconds until you hear a beep.
Unlike other motorcycle Bluetooth headsets, this prevents a user from
being dropped out of an intercom conversation by an incoming mobile
call.
2. When you have an incoming intercom call during a mobile phone call,
you will hear 4 high tone beeps, alerting you that there is an incoming

SMH3
17
English
intercom call. You will also hear a voice prompt saying “Intercom
requested”. In this case, the intercom call does not override the
mobile phone call because intercom has lower priority than mobile
call. You have to hang up the mobile phone call to make or receive an
intercom call.
Intercom Failure
When you try to start an intercom conversation with an intercom friend
who is already having a mobile phone call with another person, you will
hear a low tone double beep signifying a busy signal. You will also hear a
voice prompt saying “Intercom failed, try again later”. In this case, you
have to try again later. On the other hand, the intercom friend will hear
4 high tone beeps alerting them that there is an incoming intercom call.
Intercom Reconnection
If your intercom friend goes out of range while having an intercom
conversation, you may hear static noise and eventually the intercom will
be disconnected. In this case, the SMH3 automatically tries to reconnect
the intercom every 8 seconds. You will hear high tone double beeps until
the intercom is reestablished. If you don’t want to make a reconnection,
press and hold the (-) Button for 1 second to stop the attempt.
7. SMH3 CONFIGURATION SETTING
You can set the configuration of the SMH3 by the voice menu instruction
as below.
1. To enter into voice configuration menu, press and hold the (+) Button
for 10 seconds until the LED shows solid blue and you hear high tone
double beeps. You will hear a voice prompt saying “
menu”.
2. Press the (+) Button to navigate between menus. You will hear voice
prompts for each menu items as below.
3. You can enable or disable the feature or execute the command by
pressing the (-) Button.
4. If any button is not pressed within 10 seconds, the SMH3 will exit the
configuration and goes back to standby.
5. If you want to exit the configuration immediately, press and hold the
(+) Button until you hear a voice prompt, “”, and
press the (-) Button.
7. SMH3 CONFIGURATION SETTING

SMH3
18
The voice prompts for each menu item are as below:
(1) VOX phone
(2) Voice prompt
(3) Delete all pairings
(4) Factory reset

Enabling/Disabling Voice Activated Phone Answering
Voice Prompt “VOX phone”
Factory Default Enable
Enable / Disable Press the (-) Button
If this feature is enabled, you can answer incoming calls by simply
saying a word loudly enough, unless you are connected to intercom. For
example, when you hear a series of beeps for an incoming call, you can
answer the phone by saying “Hello” or any other word loudly. However,
the phone VOX feature does not work if you are connected to intercom.
This is enabled from the factory but you can disable this. If this mode is
disabled, you have to press the (+) Button to answer an incoming call.
Enabling/Disabling Voice Prompts
Voice Prompt “Voice prompt”
Factory Default Enable
Enable / Disable Press the (-) Button
You can disable voice prompts by configuration setting, but the following
voice prompts are always on.
- Voice prompts for configuration setting menu
- Voice prompts for battery level Indicator
- Voice prompts for factory reset
Delete All Bluetooth Pairing Information
Voice Prompt “Delete all pairings”
Factory Default N/A
Execute Press the (-) Button
To delete all Bluetooth pairing information of the SMH3, press and hold
the (+) Button until you hear a voice prompt, “Delete all pairings”, and
press the (-) Button to confirm.

SMH3
19
English
Reset to Factory Default Setting
Voice Prompt “Factory reset”
Factory Default N/A
Execute Press the (-) Button
To restore factory default settings on the SMH3, press and hold the
(+) Button until you hear a voice prompt, “Factory reset”. Press the (-)
Button to confirm. The SMH3 powers off with a voice prompt, “Headset
reset, goodbye”.

Voice Prompt 
Factory Default N/A
Execute Press the (-) Button
To exit voice configuration menu and get back to stand-by mode,
press and hold the (+) Button until you hear a voice prompt, “Exit
”. Press the (-) Button to confirm.
Press (+) Button Press (-) Button
“Vox phone” Enable / disable
“Voice prompt” Enable / disable
“Delete all pairings” Execute
“Factory reset” Execute
 Execute


SMH3
20
8. FIRMWARE UPGRADE
The SMH3 supports firmware upgrade function. Please visit Sena
Bluetooth web site at www.SenaBluetooth.com to check the latest
software downloads.
8. FIRMWARE UPGRADE BATTERY INFORMATION
The product has an internal, non-removable, rechargeable battery. Do
not attempt to remove the battery from the device as you may damage
the device. The battery can be charged and discharged hundreds of
times, but it will eventually wear out. Recharge the battery only with Sena
approved chargers designated for this device. Use of an unapproved
charger may present a risk of fire, explosion, leakage, or other hazard.
Always try to keep the battery between 15ºC and 25ºC (59ºF and 77ºF).
Extreme temperatures reduce the capacity and lifetime of the battery.
A device with a hot or cold battery may not work temporarily. Battery
performance is particularly limited in temperatures well below freezing.
Do not dispose of batteries in a fire as they may explode. Batteries may
also explode if damaged. Never use any charger that is damaged.
Operating times may differ depending on the devices used together,
features used, battery age and condition, temperatures to which battery
is exposed, and many other factors.