LEXIN LX-FT4 Motorcycle 4-Way Bluetooth Conference Intercom

1. Introduction

Thank you for choosing the LX-FT4 Motorcycle 4-Way Bluetooth Conference Intercom. This product offers a 2,000 meters (1.2 miles) bike-to-bike full-duplex intercom range, includes Bluetooth stereo wireless helmet headset(s), and is designed for installation into most open face, modular, and full-face style helmets.

With the LX-FT4, you can make hands-free calls on your Bluetooth mobile phone, listen to music or GPS navigation voice instructions, and activate wireless intercom for rider-to-rider or rider-to-passenger communication within a 2,000 meters (1.2 miles) range (for up to four units).

The LX-FT4 complies with Bluetooth Specification V4.0, supporting Headset Profile (HSP), Hands-Free Profile (HFP), and Advanced Audio Distribution Profile (A2DP). It offers universal pairing with most Bluetooth headsets. Users can activate Siri or S-Voice for voice dialing and commands. An integrated FM radio tuner allows for station scanning.

Superior audio fidelity is delivered through high-fidelity, non-ported, ultra-slim helmet HD speakers. The headset also provides excellent wind and ambient noise reduction with its miniature boom microphone.

The main unit is powered by a rechargeable lithium-ion/polymer battery, providing 10-15 hours of active use on a full charge, with over a week of standby time. Please read this User Manual carefully before using the product.

2. Package Contents

How It Works:

• Rider to rider intercom (Full duplex): Depicts four helmet icons connected in a chain.
• Rider to Passenger Intercom (Full duplex): Depicts a motorcycle with a rider and passenger, connected via Bluetooth.
• Diagram shows a GPS device and a mobile phone connected via Bluetooth to the LEXIN unit, enabling GPS audio and music playback.

Included items:

• LX-FT4 Main unit
• Stereo HD Speaker with Interchangeable Microphone (for Open Face or Full Face Helmet)
• USB Charging Cable
• Mounting Bracket & 3M Double Side Tape
• Boom microphone Holder
• Speaker Pad
• Allen Wrench
• User Manual

3. Installation Instructions

3.1 Helmet Mounting Bracket

Step 1: Mount the bracket between the internal padding and external shell of the helmet. Tighten the two screws between the bracket and clamp plate using the allen wrench.

Note: Adjust the rubber pad thickness between the clamp plates based on your helmet's size and shape. Extra rubber pads are included in the box for thickness adjustment.

Step 2 (Alternative Mounting): If you encounter issues with the bracket mounting, you can use the included 3M tape. Remove the rubber pad from the bracket, peel off the protective backing of the 3M tape. The white side adheres to the bracket, and the red side adheres to the helmet. Press firmly for 15 seconds and allow 24 hours for the glue to dry.

Note: While 3M tape mounting is convenient, LEXIN recommends the bracket mounting. 3M tape mounting is an option provided at the user's own risk.

3.2 Microphone Installation

For full face helmets, locate an area in the nose section just left of center. Attach the button microphone to the velcro pad and connect it to the headset connector.

For open face helmets, attach the microphone to the velcro pad. Adjust the microphone's direction so the triangular mark points towards your mouth. Use the boom microphone holder if necessary.

3.3 Speaker Installation

Place the speakers into the helmet's inner padding, pushing them and the microphone firmly against the Velcro pads. If the helmet has deep ear pockets, use the speaker pads to position the speakers closer to your ears.

3.4 Wire Management

Press the wires into the gap between the helmet liner and shell.

Note: The speaker with the shorter wire is for the left ear, and the speaker with the longer wire is for the right ear, which also helps enhance FM radio reception.

3.5 Mounting the Main Unit

Mount the LX-FT4 main unit onto the bracket. Attach the top portion first, then slide the main unit down until it clicks firmly into the bottom of the bracket.

3.6 Removing the Main Unit

To remove the main unit, press the top part of the bracket and detach it.

4. General Operation Instructions

4.1 Powering On/Off and Charging

• Power On: Press and hold both the A button and Jog Dial for approximately 2 seconds. The LED will blink blue, and a voice announcement will indicate the current battery life.
• Power Off: Press and hold both the A button and Jog Dial for approximately 2 seconds. The blue LED will turn red, then off.
• Charging: Connect the USB cable to the USB port. The LED turns red while charging and solid blue when fully charged. Charging takes about 2.5 hours.
• Low Battery Alert: When battery power drops below 20%, approximately 1-1.5 hours of use remain, and a beep tone sounds every 5 minutes.

4.2 Pairing the LX-FT4 with a Bluetooth Device

With the unit powered off, press and hold the A button for about 3 seconds until the LED flashes blue and red. Follow the source device's instructions to connect. Once paired, the LX-FT4 will automatically connect when turned on with Bluetooth enabled on the source device. To manually connect, click the Jog Dial.

4.2.1 Pairing a Mobile Phone

1. Start with the unit powered off. Press and hold the A button for about 3 seconds until the LED flashes blue and red.
2. On your mobile phone, search for Bluetooth devices. The headset will appear as "LX-FT4".
3. Enter "0000" for the PIN if prompted.
4. Your mobile phone will confirm successful pairing. The blue LED on the headset will blink upon connection.

4.2.2 Pairing a Stereo Bluetooth Adaptor

1. Turn on the audio source and prepare the Stereo Bluetooth Adaptor for pairing.
2. Put the LX-FT4 main unit into Bluetooth pairing mode (as described above).
3. Turn on or plug in the Stereo Bluetooth Adaptor.
4. The audio source will automatically play through the LX-FT4 main unit upon successful pairing.

4.2.3 Pairing Bluetooth GPS Navigation

1. The pairing procedure is the same as "Pairing a Mobile Phone".
2. Refer to your Bluetooth GPS navigation device's manual for specific instructions.
3. You can then listen to Bluetooth voice instructions from the GPS navigation.

5. Controls and Functions

5.1 Volume and Music Control

While playing music, press and hold the Jog Dial for one second to enter track control mode (a beep tone will sound). Within 5 seconds, rotate the Jog Dial counter-clockwise for the previous track or clockwise for the next track. After 5 seconds, the Jog Dial automatically reverts to volume control mode (a beep tone will sound).

Rotate the Jog Dial clockwise to increase volume and counter-clockwise to decrease volume. Click the Jog Dial to play or pause music.

5.2 Mobile Phone Calls - Incoming and Outgoing

5.2.1 Answer Incoming Call:

Click the Jog Dial button to answer an incoming call.

Note: The LX-FT4 does not automatically answer calls. To enable/disable automatic answering, press and hold both the Jog Dial and B button for 2 seconds. A red light flashing 3 times indicates disabled; a blue light flashing 3 times indicates enabled.

5.2.2 Reject Incoming Call:

Double-click the Jog Dial button.

5.2.3 End Active Phone Call:

Click the Jog Dial button.

5.2.4 Voice Dial:

In standby mode, press and hold the Jog Dial for one second to activate Siri or S-Voice. A beep will sound, followed by a voice prompt. Speak the contact name from your phone list to dial.

5.2.5 Last Phone Call Number Redial:

In standby mode, double-click the Jog Dial button.

5.3 Bluetooth Intercom Talk

5.3.1 Pairing with other LX-FT4 headsets for intercom talk

Before riding, it is recommended to clear all existing connections. To do this, press and hold the A and B buttons together until the red LED flashes.

1) Pairing two LX-FT4 headsets

Tip: Pair two units before starting an intercom talk.

Step 1: With both units powered off, press and hold the A button on both units for 3 seconds until the LED flashes blue and red to enter pairing mode.

Click the A button on either unit to initiate pairing. The LED on the clicked unit will flash only blue. When the LED blinks blue on both units, pairing is complete.

Step 2: Start an intercom talk by clicking the A button on either unit. During an intercom talk, the LED on both units will flash blue 3 times every 3 seconds.

Step 3: Disconnect an intercom talk by clicking the A button or Jog Dial on either unit. The LED will then blink blue on both units.

2) Pairing three LX-FT4 headsets

Tip: Mark each LX-FT4 unit with a number (e.g., end unit one, bridge unit two, end unit three) for easier operation.

Step 1: Pair unit one with unit two. With both units powered off, simultaneously hold the A button on both units for 3 seconds until the red and blue LEDs flash. Click the A button on either unit to pair. The LED on the clicked unit will flash only blue. When the LED blinks blue on both units, pairing is complete.

Step 2: Pair unit two with unit three. Power on unit two and unit three. Simultaneously hold the B button on both units for 3 seconds until the red and blue LEDs flash. Click the B button on either unit to pair. The LED on the clicked unit will flash only blue. When the LED blinks blue on both units, pairing is complete.

Step 3: Start intercom talk. After pairing, unit two acts as the bridge. For three-rider communication, start the intercom talk through unit two.

• Connect end unit one with bridge unit two: Click the A button on unit two or unit one. The LED will flash blue 3 times every 3 seconds on both units.
• Connect bridge unit two with end unit three: Click the B button on unit two or unit three. The LED on unit three will flash blue 3 times every 3 seconds. The LED on unit two will turn purple and flash 3 times every 3 seconds, indicating it has connected both end units.

Step 4: Disconnect intercom talk.

• To disconnect unit one and bridge unit two: Click the A button or Jog Dial on unit one, or click the A button on bridge unit two. Unit two and unit three remain connected.
• To disconnect unit two and unit three: Click the B button or Jog Dial on unit three, or click the B button on bridge unit two. Unit two and unit one remain connected.
• To disconnect all three units: Click the Jog Dial button on bridge unit two.

Note: The LED on bridge unit two flashes purple when all three units are connected.

3) Pairing four LX-FT4 headsets

Tip: Mark each LX-FT4 unit with a number (e.g., end unit one, bridge unit two, bridge unit three, end unit four) for easier operation.

Step 1: Pair unit one with unit two. With both units powered off, press and hold the A button on unit one for 3 seconds until the LED flashes blue and red. Do the same for unit two. Click the A button on either unit to pair. The LED on the clicked unit will flash only blue. When the LED blinks blue on both units, pairing is complete.

Step 2: Pair unit three with unit four. Repeat the same steps as for unit one and two.

Step 3: Pair unit two with unit three. With both units powered on, press and hold the B button on unit two for 2 seconds until the LED flashes blue and red. Do the same for unit three. Click the B button on either unit to pair. The LED on the clicked unit will flash only blue. When the LED blinks blue on both units, pairing is complete.

Step 4: Start intercom talk. After pairing, unit two and unit three act as bridge units. For four-rider communication, start intercom talk through bridge unit two and bridge unit three.

• Connect unit one with unit two: In standby mode, click the A button on unit two or unit one. The LED will flash blue 3 times every 3 seconds on both units.
• Connect unit three with unit four: In standby mode, click the A button on unit three or four. The LED will flash blue 3 times every 3 seconds on both units.
• Connect bridge units two and three: In standby mode, click the B button on unit two or unit three. The LED will turn purple on both units and flash 3 times every 3 seconds.

Tips: To connect Bridge units, click the B button. To connect a Bridge unit with an End unit, click the A button on the end unit.

Note: The LED on bridge units two and three will flash purple when they are connected to two other units.

Step 5: Disconnect the intercom talk.

• To disconnect unit one and unit two: Click the A button or Jog Dial on unit one, or click the A button on bridge unit two. The other three units remain connected.
• To disconnect unit three and unit four: Click the B button or Jog Dial on unit four, or click the B button on bridge unit three. The other three units remain connected.
• To disconnect bridge unit two and bridge unit three: Click the B button on either unit. Unit two remains connected with unit one, and unit three remains connected with unit four.
• To disconnect all units: Click the Jog Dial on both unit two and unit three.

Note: To maximize intercom range, maintain the chain order of connection (e.g., one:two:three:four or four:three:two:one). Unit one or four should lead or follow, with units two and three in the middle.

Note: A beep sound indicates the start of an intercom talk. It may take a few seconds for other units to connect. Wait until all units are connected.

• If bridge units two and three disconnect, the entire group disconnects.
• If end unit one or four disconnects, the other three remain connected.
• If one unit loses connection, the two units on the same channel remain connected. Reconnect the disconnected unit when it is back in range.
• If a rider goes out of range during an intercom talk, static may occur, and the intercom may disconnect. The LX-FT4 will attempt to reconnect every eight seconds, indicated by high-tone double beeps. To stop reconnection attempts, press the Jog Dial.
• For four-rider communication, connect the two bridge units (paired with B button) first, then connect them to the end units (paired with A button). Units two and three act as bridges. Keep them within intercom range for continuous communication.

Tips: To save battery, disconnect intercom units when not in use.

Important: A bridge unit cannot connect to a Bluetooth device (phone or GPS) while functioning as an intercom bridge.

5.4 Universal Pairing

To enter pairing mode: Power on the LX-FT4 and press and hold the B button for about 2 seconds until the LED flashes blue and red. Follow the other brand's Bluetooth unit instructions to enter pairing mode. Click the B button on the LX-FT4 to pair. The LED on the clicked unit will flash only blue. When the LED blinks blue on both units, pairing is complete.

To connect the LX-FT4 with another unit: In standby mode, double-click the B button on the LX-FT4. The LED will flash blue 3 times every 3 seconds on LX-FT4 units.

To disconnect, click the Jog Dial on the LX-FT4 unit.

Note: Intercom can only be initiated from the LX-FT4 unit.

5.5 FM Radio

• Turn on/off FM radio: In standby, press and hold the A button for 2 seconds. Press and hold again for 2 seconds to turn off.
• FM Radio Station Search: In FM radio mode, press and hold the Jog Dial for one second to enter station search mode. Rotate the Jog Dial clockwise for up search or counter-clockwise for down search within 10 seconds. After 10 seconds, it reverts to volume control mode.
• Preset and store up to 6 FM radio stations: When a favorite station is found, click the Jog Dial to save it. A beep tone will sound. Saving a new station overwrites the oldest saved station. Click the A button to rotate between saved stations.

5.6 Function Priority

The LX-FT4 operates with the following priority:

1. Mobile phone (highest)
2. Intercom
3. Bluetooth stereo music, FM radio (lowest)

Lower priority functions are interrupted by higher priority functions (e.g., music by an intercom call, intercom talk by an incoming mobile phone call).

5.7 Reset

To clear previous pairings, press the A and B buttons simultaneously until the LED flashes red.

5.8 Battery Life Prompt

Upon turning on the unit, the current battery life is reported. Double-click the A button to repeat the notification. Levels reported: 100% / 80% / 50% / 30% / LOW.

5.9 Change LED Color

To change the LED color, press both the Jog Dial and B button. The cycle includes Blue on, Red on, Red flashing, Purple on, Purple flashing, and Bluetooth indicator light. Changes are visible only in Bluetooth indicator light mode.

Note: LED color changing mode drains the battery faster; use only when needed.

6. Maintenance and Care

The LX-FT4 should be handled with care. Follow these suggestions to maintain your warranty:

• Do not use or store the device in dusty or dirty environments, as moving parts and electronic components can be damaged.
• Do not store the device in high heat areas, as high temperatures can shorten the life of electronic devices, damage batteries, and warp or melt plastics.
• Do not store the device in cold temperature areas. Moisture can form inside the device and damage electronic circuit boards when it returns to normal temperature.
• Do not attempt to open the LX-FT4 case.
• Do not drop or knock the device; rough handling can break internal circuit boards and mechanics.
• Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the device.
• Do not paint the device, as paint can clog moving parts and prevent proper operation.

These suggestions apply to the headset main unit, speaker-microphone clamp unit, and power charger.

7. Certification and Safety Approvals

FCC Compliance Statement

This device complies with part 15 of the FCC Rules. Operation is subject to two conditions: 1) This device may not cause harmful interference. 2) This device must accept any interference received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used according to instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur. If interference to radio or television reception occurs (determined by turning the equipment off and on), the user is encouraged to try correcting it by:

• Reorienting or relocating the receiving antenna.
• Increasing the separation between the equipment and receiver.
• Connecting the equipment to an outlet on a circuit different from the receiver's.
• Consulting a dealer or an experienced radio/TV technician.

FCC RF Exposure Statement

The antenna(s) used for this device must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operated in conjunction with any other antenna or transmitter.

FCC Caution

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

CE Declaration of Conformity

This product is CE marked according to the provisions of the RandTTE Directive (99/5/EC). LEXIN declares that this product is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC.

8. Warranty

LEXIN warrants this product to conform to published technical specifications and accompanying materials, and to be free of defects in materials and workmanship for a period of two (2) years from the date of purchase by the original consumer purchaser. This limited warranty is non-transferable.

The warranty is limited to repair and/or replacement at LEXIN's discretion for defective or non-conforming products. LEXIN is not responsible for product failure due to:

• Misapplication or misuse of the Product.
• Failure to adhere to LEXIN's specifications or instructions.
• Neglect, abuse, or accident.
• Associated or complementary equipment or software not furnished by LEXIN.

To obtain warranty service, deliver the Product to LEXIN or its international distributor with proof of purchase. The customer agrees to insure the Product or assume the risk of loss or damage in transit, prepay shipping charges, and use the original shipping container or equivalent.

9. Waiver and General Release

By using the Product, you waive substantial legal rights. Please read the following carefully. By using the Product, you agree to be bound by this agreement and forfeit the right to sue.

By using the Product, you irrevocably release, indemnify, and hold LEXIN harmless from any liability, loss, claim, and expense (including attorney's fees) for any bodily injuries, harm, or death, as well as losses or damages to goods, vehicles, or property, regardless of cause or jurisdiction.

• You, your heirs, legal representatives, successors, or assigns, hereby release, discharge, indemnify, and hold harmless LEXIN from any and all litigation, claims, debts, demands, actions, and liability arising directly or indirectly from using the Product for any distress, pain, suffering, discomfort, loss, injury, death, or damages to any person or property, WHETHER ARISING FROM NEGLIGENCE OR OTHERWISE.
• You fully understand and assume the risks of using the Product, including risks from negligent acts or omissions by others. All risks are assumed solely by the user.
• You confirm you are physically capable to use the Product, have no medical conditions that would infringe upon your abilities, are at least eighteen (18) years of age, and have been advised of the risks. You confirm you will not consume alcohol or mind-altering substances before or during use.
• You acknowledge and understand the warnings: Risks and dangers exist in traffic, including injury, illness, strains, fractures, paralysis, death, or other serious disability. These risks may be caused by the negligence of manufacturers, agents, or third parties, or by foreseeable or unforeseeable causes. You assume all risks and responsibility for losses or damages.
• By using the Product, you confirm you have read this release of liability and fully understand and accept its terms and conditions.

WARNING: PLEASE CHECK ALL LOCAL LAWS AND REGULATIONS REGARDING THE USE OF IN-HELMET SPEAKERS WHILE OPERATING MOTORIZED VEHICLES.