Frequently Asked Questions

Powering On
Press and hold the Center Button and the (+) Button at the same time for 1 second to power on.

Powering Off
Tap the Center Button and the (+) Button simultaneously.

The charging LED beside the charging port turns red while charging, and turns to blue when the headset is fully charged. It takes about 2.5 hours to be completely charged. You can use the Sena Expand Boom while it is charging. 

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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%

You can easily adjust the volume by tapping 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 the headset off and on.

1. When you have an incoming call, tap the Center Button to answer the call.
2. To end a call, press and hold the Center Button for 2 seconds until you hear a mid-tone single beep, or wait for the called person to end the call.
3. To reject a call, press and hold the Center Button for 2 seconds until you hear a beep while the phone is ringing.
4. 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.
• In stand-by mode, press and hold the Center Button for seconds, to activate the voice dialing of your mobile phone. You will hear a high tone single beep. Your mobile phone has to support voice dialing. Refer to your mobile phone manual for further instructions.
• To cancel voice dialing or redialing the last number command, tap the Center Button while it is in progress.

If you have a second mobile phone connected with the Sena Expand Boom by multipoint connection, you can answer the incoming call to the second mobile phone by tapping the Center Button while you are on the line of the first mobile phone. In this case, the first call is on call waiting

You can listen to stereo music from your Bluetooth wireless audio device. You can not only adjust the volume but also use functions such as play, pause, next track and previous track.

• To adjust the volume, tap the (+) Button or the (-) Button.
• To play or pause music, press and hold the Center Button for 1 second until you hear a mid-tone double beep.
• To track forward or track back, press and hold the (+) Button or the (-) Button for 1 second until you hear a mid-tone single beep.

You can start sharing music with an intercom friend using Bluetooth stereo music during a two-way intercom conversation. When you terminate music sharing, you can go back to the intercom conversation.

• To start or terminate sharing music, press and hold the Center Button for 1 second during an intercom conversation until you hear a double beep and you and your intercom friend will listen to or terminate sharing music.
• To track forward or track back, press and hold the (+) Button or the (-) Button for 1 second until you hear a mid-tone single beep.

Note:
• Both you and your intercom friend can remotely control music playback during music sharing such as track forward and track back.
• When you have an incoming call, make a phone call, or hear the turn-by-turn voice instruction of GPS during music sharing, the function will be paused.

Initially Pairing the Expand Boom
The headset will automatically enter the phone pairing mode when you initially turn on the headset or in the following situations:

• Rebooting after executing the Factory Reset feature; or
• Rebooting after executing the Delete All Pairings feature.

1. Press and hold the Center Button and (+) Button for 1 second. You will hear a voice prompt, “Phone pairing”.
2. Search for a Bluetooth device on your mobile phone. Select the Expand Boom in the list of devices detected on the mobile phone.
3. Enter 0000 for the PIN. Some mobile phones may not ask for a PIN.

Note:
To cancel phone pairing, tap the Center Button.

Pairing When the Expand Boom is Turned Off

1. Press and hold the Center Button and (+) Button for 5 seconds when the Expand Boom is turned off. You will hear a voice prompt, “Phone pairing”.
2. Search for a Bluetooth device on your mobile phone. Select the Expand Boom in the list of devices detected on the mobile phone.
3. Enter 0000 for the PIN. Some mobile phones may not ask for a PIN.

Pairing When the Expand Boom is Turned On

1. Press and hold the Center Button for 8 seconds when the Expand Boom is turned on. You will hear a voice prompt, “Phone pairing”.
2. Search for a Bluetooth device on your mobile phone. Select the Expand Boom in the list of devices detected on the mobile phone.
3. Enter 0000 for the PIN. Some mobile phones may not ask for a PIN.

 

The Sena Expand Boom can be paired with up to three other headsets for Bluetooth intercom conversation.

1. Turn on the two Sena Expand Boom headsets (A and B) that you would like to pair with each other.
2. Press and hold the Center Button for 5 seconds, then you will hear a mid-tone single beep and a voice prompt, “Intercom pairing”.
3. Simply tap the Center Button of any one of the two headset A or B (it doesn’t matter which you choose.) and wait until the LEDs of both headsets turn to  blue and intercom connection is automatically established. The two Sena Expand Boom headsets A and B are paired with each other for intercom conversation. If the pairing process is not completed within one minute, the Sena Expand Boom will return to stand-by mode.

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4. You can make other pairings between headsets A and C, and between headsets A and D by following the same procedure as above.

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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 the first intercom friend. The previous intercom friend becomes the second intercom friend, and third intercom friend.

Note:
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.

 

 

If you want to restore the headset to factory default settings, use the Factory Reset in the configuration menu. The headset automatically restores the default settings and turns off.

To do a Factory Reset on your Expand Boom, you need to enter into the Voice Configuration.

1. To enter the voice configuration menu, press and hold the Center Button for 12 seconds until the LED shows solid blue and you hear high tone double beeps. You will also hear a voice prompt, “Configuration menu”.
2. Tap the (+) Button or (-) Button to navigate between the menus, until you hear the voice prompt, "Factory Reset"
3. Tap the Center Button to confirm. The Sena Expand Boom powers off with a voice prompt, “Headset reset, goodbye”.

When the Sena Expand Boom is not working properly or is faulty for any reason, you may reset it by pushing the pinhole reset button at the back of the headset main unit. 

1. Rotate the speaker pad of the left headset counter-clockwise to detach it.

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2. Insert a paper clip into the reset pin-hole and tap the reset button for a second using light pressure. The Sena Expand Boom will be switched off, and you have to turn the system back on and try again. However, this will not restore the headset to the factory default settings.

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