Sena BiKom 20 Cycling Communication System

Quick Start Guide

Button Legend:

• (+): Plus button
• (O): Center button
• (-): Minus button

Before You Begin

Sena Cycling App

Download the Sena Cycling app from the Google Play Store or the App Store.

[Sena Logo]

Info on BiKom 20

Key Features

• Mesh Intercom 3.0 with improved audio quality, more stable connections, and longer conversations.
• Adjustable microphone for easy audio mute/unmute.
• Bluetooth® 5.2
• Real-time voice notifications on riding status.
• Over-the-Air (OTA) firmware updates.

Device Diagram:

• ① Plus Button (+)
• ② Center Button (O)
• ③ Minus Button (-)
• ④ Charging and Status LED
• ⑤ USB-C Charging Port

Package Contents

• BiKom 20
• Wide Strap Mount
• Slim Strap Mount
• Clip Mount for Hats
• Foam Microphone Covers (x2)
• USB-C Power Cable

Installation

Strap Mount

1. Attach the mount to the helmet strap.
2. Slide the BiKom 20 onto the mount.
3. Position the device on the helmet.

Clip Mount for Hats

1. Attach the clip mount to the hat.
2. Slide the BiKom 20 onto the clip mount.
3. Position the device on the hat.

Basic Operations

• Tap: Press the button the specified number of times.
• Press and Hold: Press and hold the button for the specified duration.
• Voice Prompt: Voice notification.
• LED: Status indicator light.

Charging

Connect the USB-C cable to the charging port. Full charge takes approximately 2.5 hours.

You can use any third-party USB charger with FCC, CE, IC, or other local recognized certifications. Using unapproved chargers may cause fire, explosion, leakage, and other risks, potentially reducing battery life or performance.

Device Operations

Powering On/Off

• Power On: Press and hold the center button for 1 second.
• Power Off: Press and hold the center button for 1 second.

Microphone Mute/Unmute

Use the adjustable boom microphone to mute or unmute the audio.

• Mute: Voice prompt "Microphone muted"
• Unmute: Voice prompt "Microphone unmuted"

Volume Control

Press the (+) or (-) button to adjust volume.

Mesh Intercom

The BiKom 20 offers two Mesh Intercom modes:

• Open Mesh™: For open group intercom conversations.
• Group Mesh™: For private group intercom conversations.

Open Mesh

Communicate freely with an virtually unlimited number of users on any of the 6 available channels. The default Mesh Intercom channel is 1.

Activating/Deactivating Mesh Intercom

• Activate: Press the center button once. Voice prompt: "Mesh intercom active, Open Mesh, Channel 1".
• Deactivate: Press the center button once. Voice prompt: "Mesh Intercom not active".

Channel Selection

1. Access channel settings by pressing the center button twice.
2. Navigate through channels by pressing the (+) or (-) button.
3. Confirm and save the channel by pressing the center button once.

The channel is automatically saved if no button is pressed for 10 seconds. The channel is also saved when the BiKom 20 is turned off.

Group Mesh

Create private group conversations with up to 24 participants.

Creating a Group Mesh

1. Initial users (User, A, and B) enter the group mesh by pressing the center button for 5 seconds while in open mesh. You do not need to be on the same open mesh channel to create a group mesh.
2. When the group mesh is completed, it automatically switches from open mesh to group mesh. Voice prompt: "Group Mesh".

To cancel during a group mesh, press the center button once.

If the group mesh is not completed within 30 seconds, users will hear the voice prompt "Group error".

Joining an Existing Group Mesh

During a group mesh, you can invite other users in open mesh to join the group.

1. The initial user and other users (C and D) enter the group mesh by pressing the center button for 5 seconds.
2. Upon completion of the group mesh, other users (C and D) automatically join the group mesh while leaving the open mesh. Voice prompt: "Group Mesh".

New Participants (C & D)

If the group mesh is not completed within 30 seconds, the current user (initial user) will hear a double low tone beep, while new users (C and D) will hear the voice prompt "Group error".

Switching Open/Group Mesh

You can switch between open mesh and group mesh without resetting the mesh.

If you have never participated in a group mesh, you cannot switch between open mesh and group mesh. The voice prompt "No group available" will be issued.

Resetting Mesh

If the BiKom 20 resets the mesh while in open mesh or group mesh mode, it automatically returns to open mesh, channel 1.

Press and hold the center button for 8 seconds. Voice prompt: "Mesh Reset".

Using with a Smartphone

Phone Pairing

1. Access the pairing mode by pressing and holding the center button for 5 seconds. Voice prompt: "Phone pairing".
2. Select "BiKom 20" from the list of Bluetooth devices on your smartphone.

To cancel phone pairing, press any button.

Making and Answering Calls

• Answer Call: Single press the center button.
• End Call: Press and hold the center button for 2 seconds.
• Reject Call: Press and hold the center button for 2 seconds.
• Activate Voice Assistant: Press and hold the center button for 3 seconds.

Speed Dial

Assigning Speed Dial Numbers

You can assign speed dial numbers using the Sena Cycling app.

Using Speed Dial Numbers

1. Access the speed dial menu by pressing and holding the center button for 3 seconds. Voice prompt: "Speed dial".
2. Navigate through the speed dial numbers by pressing the (+) or (-) button.
3. Confirm the selection by pressing the center button once. Voice prompt: "Speed dial (#)".

Music

• Play/Pause Music: Press the center button once.
• Next/Previous Track: Press and hold the center button for 1 second, or press the (+) or (-) button.

Voice Cycling Computer

The BiKom 20's Voice Cycling Computer (ABC) function connects to your bike's sensors and provides real-time notifications during your ride. Simply pair the BiKom 20 with Shimano's Digital Integrated Intelligence (Di2) system to receive seamless voice updates.

• Before use, consult local laws and regulations.
• Using this function while riding may pose safety risks. Stay alert and ride with caution.
• The user assumes the risk and responsibility of using this function.

Pairing BiKom 20 with Shimano Di2

To use the ABC function with Shimano Di2, you must first pair the Di2 system with the BiKom 20.

Shimano Di2 System

Activate Bluetooth pairing mode on the Di2 device.

BiKom 20

1. Access the configuration menu by pressing and holding the center button for 10 seconds. Voice prompt: "Configuration menu".
2. Navigate to the Shimano Pairing option by pressing the center button once. Voice prompt: "Shimano pairing in progress".
3. Wait for the voice prompt: "Shimano connected".

To cancel, press the (-) button, then the center button to exit.

If pairing is not completed within 3 minutes, the voice prompt "Exit" will be issued. Subsequently, try again from the first step.

Voice Notifications

Once Shimano pairing is complete, the BiKom 20 will issue the following voice notifications:

Shift Mode Selection

Based on your selection, a voice prompt informs you of the current shift mode. The Di2 system allows for three shift modes.

• "Manual shifting mode"
• "Synchronized shifting mode 1"
• "Synchronized shifting mode 2"

Upshift/Downshift

When you change gears, a voice prompt informs you of the current gear engaged.

• "Front gear #"
• "Rear gear #"

Battery Status

When the battery level drops below 10 percent, you will be notified by a voice prompt.

• "Shimano, recharge battery"

Firmware Update

You can update the firmware Over-the-Air (OTA) directly from the Sena Cycling app settings.

Troubleshooting

Reset

To reset the BiKom 20 to factory default settings, use the reset function.

1. Access the configuration menu by pressing and holding the center button for 10 seconds. Voice prompt: "Configuration menu".
2. Select "Factory reset" by pressing the center button twice. Voice prompt: "Factory reset".
3. Confirm the reset by pressing the center button once. Voice prompt: "Headset reset, goodbye".

Reset After Error

If the BiKom 20 is on but unresponsive, you can perform an error reset to restore its functionality.

Disconnect the USB-C power cable, then simultaneously press and hold the (+) and center buttons for 8 seconds until the device restarts. All settings will remain unchanged.

Copyright and Trademarks

Copyright 2025 Sena Technologies, Inc. All rights reserved.

© 1998 - 2025 Sena Technologies, Inc. All rights reserved.

Sena Technologies, Inc. reserves the right to make changes and improvements to the product without prior notice.

Sena™ is a trademark of Sena Technologies, Inc. and its affiliates located in the USA and other countries.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Sena is under license.

Sena Technologies, Inc.
152 Technology Drive, Irvine, CA 92618