Frequently Asked Questions
You can view and download the full User's Guide for the 20S via the link below.
20S User Guide | Sena
Press the Jog Dial and the Phone Button at the same time to power the headset either on or off.
When powering on the headset, press the Jog Dial and the Phone button at the same time until the blue LED appears while hearing the ascending beeps.
When powering off the headset, press the Jog Dial and the Phone Button at the same time until the red LED appears briefly and the headset turns off completely while hearing descending beeps.
You can charge the 20S 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 20S . The LED turns red while the headset is charging and turns blue when it is fully charged. It takes about 2.5 hours to be completely charged.
Please make sure to take off your headset while charging. The headset automatically turns off during charging.
You can check the battery level in two different ways when the headset is powering on.
When the headset is powering on, the red LED flashes rapidly indicating the battery level.
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 the Jog Dial and the Phone Button simultaneously for about 3 seconds until you hear three, high toned beeps. Then you will hear 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 indication.
You can easily adjust the volume by rotating the Jog Dial. 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 for your Bluetooth MP3 music. So you can always maintain the preferred optimum volume level for each audio source.
Use of the product at a high volume for a long period of time may damage your eardrums or hearing ability. Keep the volume at a modest level to prevent damage.
1. Turn on the 20S and press the Phone 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 20S 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 20S is ready to use. You will hear a voice prompt from the 20S saying “Your headset is paired”.
5. If the pairing process is not completed within three minutes, the 20S will return to stand-by mode.
1. Turn on the headset and press the Jog Dial for 6 seconds until the red LED is rapidly flashing and you hear multiple beeps.
2. Within 2 seconds, tap the Phone Button and hear the voice prompt, “Second mobile phone pairing”. Again within 2 seconds, tap the Phone Button and the LED turns to green flashing and the beeps turn to multiple mid-toned beeps. You will hear the voice prompt, “GPS pairing”.
3. Search for Bluetooth devices on the GPS navigation screen. Select the 20S 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 Boom! Audio 20S is ready to use. You will hear a voice prompt from the 20S saying “Your headset is paired”.
6. If the pairing process is not completed within three minutes, the 20S will return to stand-by mode.
Note: If you pair your GPS device via GPS Pairing, its instructions will not interrupt your intercom conversations, but overlay with them.
*Note: The 20S needs to have the latest firmware installed in order to be paired with the Handlebar Remote.
1. Power on the 20S.
2. Power on the Handlebar Remote by tapping the Front Button once.
3. On the 20S, hold down the Jog Dial for 12 seconds until you hear the voice prompt say "Configuration Menu".
4. Rotate the Jog Dial clockwise or counter-clockwise to cycle through the settings until you get to "Remote Control Pairing".
5. Tap the Phone Button on the 20S to select the "Remote Control Pairing" option.
6. On the Handlebar Remote, hold down the Rear Button for 5 seconds until the LED flashes red and blue rapidly.
The 20S and the Handlebar Remote are now paired together. The Handlebar Remote can now be used to control most of the features of the 20S such as phone calls, intercom, music, and the FM radio. You can refer to the User's Guide on how to operate the functions of the 20S using the Handlebar Remote.
Here is a video on how to pair the 20S to the Handlebar Remote.
You can also pair the Sena Wristband Remote using the same steps. However, on the Wristband Remote you would need to hold down the Top Button for 5 seconds.
1. When you have an incoming call, simply tap the Phone Button or the Jog Dial 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, unless you are connected to intercom.
3. To end a call, tap the Phone Button or press the Jog Dial for 2 seconds until you hear a beep, or wait for the called person to end the call.
4. To reject a call, press the Jog Dial for 2 seconds until you hear a beep while the phone is ringing.
5. To transfer a call between the mobile phone and the headset during the phone conversation, press the Phone Button for 2 seconds until you hear a beep.
6. There are several ways to make a phone call:
– Enter numbers on your mobile phone’s keypad and make a call. Then the call is automatically transferred to the headset.
– For some older mobile phones which do not automatically transfer calls to the headset, press the Phone Button after entering phone numbers on the mobile phone keypad.
– Tap the Phone Button in stand-by mode to activate the voice dialer 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.
1. If you are using second mobile phone connection and you have an incoming call from the second phone during a call involving 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 transfer you to the first phone call.
2. If you are using second mobile phone connection of mobile phone and GPS, you may not be able to listen to the GPS voice instruction during the phone call.
The Bluetooth audio device must be paired with the 20S by following the “Bluetooth Stereo Device Pairing” procedures. The 20S supports the Audio/Video Remote Control Profile (AVRCP), so if your Bluetooth audio device also supports the AVRCP, you can use the 20S to remotely control music playback. Not only can you adjust the volume but you can also use the functions such as play, pause, next track and previous track. If the Audio Multitasking feature is enabled, you can listen to the music while having an intercom conversation.
1. To adjust the volume, rotate the Jog Dial.
2. To play or pause music, press and hold the Jog Dial for 1 second until you hear a double beep.
3. To track forward or track back, rotate while pressing the Jog Dial clockwise or counter clockwise.
Here is how to enable the Music Sharing feature on a Sena 20S.
1. Pair two 20S headsets using one of the intercom pairing methods. One way is to hold down the Jog Dial on both of the headsets for 6 seconds until you see the LED flash red rapidly and you hear the voice prompt say “intercom pairing” then within two seconds tap the Jog Dial once on one of the headsets.
2. Tap the Jog Dial on of the headsets to return them to standby mode.
3. Pair one of the headsets to the device that will be source of the music using the Mobile Phone pairing method. Hold down the phone button for 5 seconds until you hear the voice prompt say “phone pairing” and you see the LED flash red and blue rapidly.
4. While the 20S is in Phone Pairing mode, scan for the Sena 20S in the list of Bluetooth devices on your audio devices and when it appears select it to pair the two devices together.
5. Wait for the devices to pair together.
6. After pairing the device to the 20S, tap Jog Dial on the headset to go into intercom mode.
7. Start playing music on the audio device.
8. Hold down Jog Dial for 3 seconds until you hear three beeps then let go. There will be one beep after one second, two beeps after two seconds then three beeps after three seconds. After releasing the Jog Dial, you will hear the voice prompt say “Music Sharing”.
*Note #1: Music Sharing can be turned off by holding down the Jog Dial for 3 seconds again. The music will return to being heard only by the headset that is paired to the audio device.
*Note #2: To make sure that the Bluetooth connection is stable between the two headsets when using the Music Sharing feature, flip up the antenna on the 20S.
1. To restore the 20S to factory default settings, press and hold the Phone Button for 12 seconds until the LED shows solid red and you hear double beeps. You will hear a voice prompt saying “Factory reset”.
2. Within 5 seconds, press the Jog Dial to confirm reset. The headset will be restored to factory setting and switched off automatically. You will hear a voice prompt saying “Headset reset, good-bye”.
3. If you press the Phone Button or don’t press the Jog Dial within 5 seconds, the reset attempt is canceled and the headset returns to stand-by mode. You will hear a voice prompt saying “Canceled".
When the 20S is not working properly or is in faulty status for any reason, you may reset by pushing the pin-hole reset button at the back of the headset main unit. Insert a paper clip into the reset pinhole and press the reset button for a second with light pressure. The 20S will be switched off, and you have to turn the system back on and try again. However, this will not restore the headset to factory default settings.
The 20S can be paired with up to nine other headsets for Bluetooth intercom conversation.
1. Turn on the two 20S headsets (A and B) that you would like to pair with each other.
2. There are two ways you can enter the two headsets into pairing mode.
- Press and hold the Jog Dial of the headset A and B for 6 seconds until red LEDs of both units start to flash rapidly. You will hear a voice prompt saying “Intercom pairing”.
- Remove the two headsets from the clamps. Grab them with each hand and shake them simultaneously until the green LEDs of the both units start to flash rapidly
3. Simply tap the Jog Dial of any one 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 20S headsets A and B are paired with each other for intercom conversation. If the pairing process is not completed within one minute, the 20S will return to stand-by mode.
4. You can pair with up to nine other headsets. To pair with more headsets such as A and C, A and D, and more, simply follow the same procedure as above.
5. The intercom pairing queue is ‘Last-Come, First-Served’. If a headset has multiple paired headsets for intercom conversations, the last paired headset is set as first intercom friend. The
previous intercom friend becomes second intercom friend, and third intercom friend.
1. For example, after the pairing procedures listed above, headset D is the first intercom friend of headset A. Headset C is the second intercom friend of headset A, and headset B is the third intercom friend of headset A.
2. Pairing by shaking works only between 20S devices.
3. If you want to cancel pairing, double tap the Jog Dial during pairing mode.
1. You can start an intercom conversation with one of any intercom friends by using either the Jog Dial or the voice command. Single tap to start intercom with the first intercom friend and double tap to start intercom with the second intercom friend. To start intercom with the third intercom friend and above, triple tap to enter into friend selection mode. Rotate the Jog Dial to select a friend and tap once more to initiate the intercom with that friend.
2. You can end an intercom conversation by using either the Jog Dial or the voice commands. Press and hold for 2 seconds to end any intercom, or use the voice command, “End Intercom”. Or, you can single tap to end intercom with the first intercom friend and double tap to end intercom with the second intercom friend. To end intercom with the third intercom friend and above, triple tap to enter into friend selection mode. Rotate the Jog Dial to select a friend and tap once more to end intercom with that friend. Also, use the voice command, “Intercom [one~nine]” to end each
Start & End Two Way Intercom
|1st Intercom Friend||2nd Intercom Friend||3rd and 9th intercom friend|
|Start Intercom||Single Tap||Double Tap||Triple Tap -> Rotate To Select Friend -> Single Tap|
|End Intercom||Single Tap||Double Tap||Triple Tap -> Rotate To Select Friend -> Single Tap|
|End any Intercom||Press and Hold for 2 seconds||Press and Hold for 2 seconds||Press and Hold for 2 seconds|
You (A) can have a three-way intercom with two other 20S friends (B & C) by establishing two intercom connections at the same time.
1. You (A) need to be paired with two other friends (B & C) for three-way intercom.
2. Start an intercom conversation with one of the two friends in your intercom group. For example, you (A) may start an intercom conversation with the intercom friend (B). Or intercom friend (B)
may start an intercom call with you (A).
3. The second intercom friend (C) may join the intercom by making an intercom call to you (A). You (A) may also connect the second intercom friend (C).
4. Now you (A) and two 20S intercom friends (B & C) are having a three-way intercom.
End Three-way Intercom
When you are a member of an active three-way intercom, you can completely terminate the intercom or just disconnect an intercom connection with one of your active intercom friends.
1. Press the Jog Dial for 2 seconds until you hear double beeps to terminate a three-way intercom completely. It terminates both intercom connections with (B) and (C).
2. Tap or double tap the Jog Dial to disconnect intercom connection with one of the two intercom friends accordingly. For example, by single tapping the Jog Dial, you can just terminate the intercom connection with the first intercom friend (B). However, you still have the intercom connection with your second intercom friend (C).
|Jog Dial Operation||Result|
|Press for 2 Seconds||Disconnected (B) & (C)|
|Single Tap||Disconnected (B)|
|Double Tap||Disconnected (C)|
You can have multi-way intercom with up to seven other 20S users by creating an intercom chain. Both the head and the tail of the chain can add new participants.
For example, if you have a three-way intercom set up, the new participant (D) can be added to either (B)-the head, or (C)-the tail. If (D) were added to (C), then (D) becomes the new tail of the chain. If (D) were added to (B), then (D) becomes the new head. In this way, an intercom chain can hold up to eight people.
Please note that each participant’s intercom friends are the ones adjacent to each other.
To have multi-way intercom with more than four participants, you must enable Eight-way Intercom
To turn on the FM radio
1. Press and hold the Phone Button for 2 seconds until you hear a mid-tone double beep sound.
You will then hear a voice prompt saying “FM on”.
In order to turn off the FM radio
1. Press and hold the Phone Button for 2 seconds until you hear a voice prompt saying “FM off”.
When you power off, the 20S will remember the last station frequency. When you power it on, the last station frequency will be playing.
"Scan" is the function that automatically searches station frequencies, starting from the current frequency and up. To use the scan function, please follow the procedures below:
1. Double tap the Phone Button. Then the current station frequency moves upward to find other station frequencies.
2. If the tuner finds a station, it stays at the station frequency for 8 seconds, then scanning to the next station frequency.
3. Scan function stops when you double tap the Phone Button again.
4. To save a station while scanning frequencies, tap the Phone Button when at that station. You will hear a voice prompt from the 20S saying “Save preset (#)”. The station will be saved as the next preset number.
5. All stations preset during “Scan”, will overwrite previously set
“Seek” is the function that searches from station to station frequencies. To use the “Seek” function, please follow the procedure below:
1. Rotate while pressing the Jog Dial clockwise to search up the station dial or counter clockwise to search down the station dial.
2. If the tuner finds a station while searching frequencies, it stops the seek function.
3. To save the current station, press and hold the Jog Dial for 2 seconds until you hear a voice prompt saying “Preset (#)”.
4. Rotate the Jog Dial clockwise or counter clockwise, in order to select which preset number you want for that specific station. You can save up to 10 preset stations. (You may cancel the preset
operation by waiting approximately 10 seconds. You will then hear “Save preset cancelled”. You can also rotate the Jog Dial clockwise or counter clockwise until you hear “Cancel”. Tap the
Jog Dial to confirm cancellation. You will then hear “Save preset cancelled”).
5. To save the current station, tap the Jog Dial again. You will then hear a voice prompt saying “Save preset (#)”.
6. To delete the saved station in the preset number, tap the Phone Button. You will then hear a voice prompt saying “Delete preset (#)”.
1. You can save FM stations to presets before using FM radio. Connect the 20S to your PC and open the Device Manager. It allows you to save up to 10 FM station frequency presets on the 20S settings menu. You may do the same operation by using the Sena Smartphone App.
2. You can still answer an incoming phone call and intercom while listening to the FM radio.