USA SPECS BT45-AUX Guide

start guide
bt45-aux
UNIVERSAL
BLUETOOTH® PHONE & MUSIC interface

Support..................................................................................... 1
Product Overview .................................................................... 2
Compatibility ...................................................................... 2
Installation ................................................................................ 3
Pairing Bluetooth Devices (Smartphones).............................. 5
Pairing 2nd Device (Multi-point) ........................................... 6
Wireless Remote Control......................................................... 7
Remote Control Low Battery Indicator .................................. 7
Remote Control Functions........................................................ 8
Enable/Disable Voice Prompt + Caller Number
Announcement ......................................................................... 8
Media Streaming..................................................................... 9
Hands-Free Phone Calls.......................................................... 9
Answer and End Calls............................................................. 9
Make Calls............................................................................. 10
Trouble Shooting.....................................................................11
Rev:092016
TABLE OF CONTENTS

1
This guide provides you with the information you need to get
started.
For more information and additional support, please visit
www.usaspec.com where you can:
• Review the product’s User Manual, warranty policy, and
troubleshooting FAQs.
• Watch how-to videos
To contact our customer service team, please
email [email protected]
or call [phone] Mon-Fri 9am-5pm PST
SUPPORT

2
PRODUCT OVERVIEW
BT45-AUX: Universal Bluetooth ® Phone & Music Interface
• Designed to work with any vehicles with factory AUX
ports or any USA SPEC PA series interfaces.
• Multi-point technology lets you connect two devices at
the same time
• Use the included wireless remote control to answer
& reject phone calls, control music playback, and to
activate voice command (Siri, Google Now, & etc.)
• All speaker playback on both phone calls and media
streaming for dynamic and rich audio quality
• Built-in echo & noise cancellation for crystal clear phone
call quality
COMPATIBILITY
• Any vehicles with a factory 3.5mm AUX input
• Any vehicles with an existing USA SPEC PA series
interface
• Any Bluetooth devices (smartphone, tablet, etc) with
Bluetooth profile HFP and A2DP 2.0 or higher

3
INSTALLATION
We recommend that the BT45 be installed by a qualified
professional since all installation will involve cutting into
factory wirings.
12V: to battery’s positive terminal
GND (ground): to battery negative
terminal or metal chassis
TelOut- (gray): optional1
ACC : to electric terminal controlled
by ignition switch (12V DC) ON/OFF
Mute: optional1
TelOut+ (white): optional1
To factory AUX IN
or USA SPEC PA serie’s
RCA port
See p. 4 for recommended
microphone locations
To module’s Radio/Power port
MIC AUX1 or (AUX2)2
power & phone/mute cable
interface module
3.5mm AUX cable
microphone
1. The Mute, Tel Out+, and Tel Out- wires are for additional
features available to radios with negative mute functions. Please
consult with your installation professional for details.
2. Try the AUX2 port in you are experiencing engine noise

4

5
PAIRING BLUETOOTH DEVICES (SMARTPHONES)
1. Enable the Bluetooth function on your device
(smartphone) and make sure it’s discoverable
2. Search for available devices
3. Turn your vehicle’s ignition ON
4. Press the AUX button on your radio to set it in AUX mode
5. Select BT45-AUX from the list of available devices to
start the pairing process
6. Once the pairing process is complete you will hear the
“CONNECTED” voice prompt
Voice Prompt + Caller Number Announcement
This feature is enabled by default. To disable the feature please
see page 8.

6
Pairing 2nd Device (Multi-point)
1. Turn your vehicle’s ignition OFF
2. Disable the Bluetooth function on your 1st
(already paired) device
3. Enable the Bluetooth function on your 2nd device and
search for available devices
4. Turn your vehicle’s ignition ON
5. Press the AUX button on your radio
6. Select BT45-AUX from the list of available devices to
start the pairing process
7. Wait for the “CONNECTED” voice prompt confirmation
8. Turn the ignition OFF
9. Enable Bluetooth functions on BOTH devices
10. Turn the ignition back ON
11. Both devices will automatically be connected to BT45-
AUX. You will hear “CONNECTED, CONNECTED”
confirming both devices have been successfully
connected.

7
WIRELESS REMOTE CONTROL
1. Twist open the remote control’s bottom cap
2. Remove the battery’s protective film
3. Close the cap
4. Use the enclosed double-side tape to place the remote
control at a location that is most convenient for you.
Please avoid placing it over or around any airbags, or
under direct sunlight.
Remote Control Low Battery Indicator
1. The LED on the remote control will blink 10 times to
indicate that battery is low. Please replace it with a 3V
CR2032 battery.
2. Turn vehicle’s ignition OFF
3. Twist the remote control’s bottom cap off and remove the
battery from its housing
4. Turn vehicle’s ignition ON and within 60sec insert the
replacement battery in the housing.
5. You will hear a long beep through your radio (make sure
it is in AUX mode) at the same time the remote control’s
LED will turn solid blue followed by 10 flashes.
6. If you do not see it flash 10 times then repeat Step 2-5.
• If your remote control is not functioning properly upon
initial setup then please perform step 2-6

8
Tap to answer calls or
tap to go to next track when
streaming music
Tap to end/reject calls or
tap to go to previous track
when streaming music
Tap to adjust volume up
for both streaming and phone audio
Tap to adjust volume down
for both streaming and
phone audio
Tap to play/pause when streaming music.
Tap & hold (2 sec) to activate
smartphone’s voice command function
such as Siri, Cortanta,and Google Now
LED indicator
Remote Control Functions
Enable/Disable Voice Prompt + Caller Number
Announcement
1. Pause all media streaming and end any active calls
2. Tap to enable the feature: you will hear “Voice
Enabled”
3. Tap to disable the feature: you will hear “Voice
Disabled”

9
MEDIA STREAMING
If you have 2 devices connected to the BT45-AUX at the
same time, you can stream audio from either one.
1. Manually launch your preferred music/audio app such
as Spotify, YouTube, Podcast app, & etc. from your
device.
2. Once started you can then use the remote control to
adjust volume, track up/down, pause & play.
3. To switch between the 2 devices, simply pause device
#1’s playback and press play on device #2 and vice
versa.
HANDS FREE PHONE CALL
1. Press the AUX button on radio if you are not already in
the AUX mode.
2. To answer a call tap on the remote control or answer
from your phone directly*.
3. To reject or end a call tap
4. Phone call audio can be adjust via the remote control,
phone control, or radio/steering wheel control.
* If you answered a call from your iPhone directly, the
phone call audio will go through the iPhone. You must then
select BT45-AUX from your iPhone screen to re-direct the
call.
Answer and End Calls

10
1. Tap on the remote control to initiate smartphone’s
voice command to make a call or make the call directly
from your phone.
2. Tap to end call
• Please keep in mind that the environment inside a
moving vehicle tends to be noisier than your average
environment. This will affect how accurately your
phone’s voice recognition function picks up your voice
command.
Make Calls
The Bluetooth®word mark and logos are registered trademarks owned
by the Bluetooth SIG Inc., and any use of such marks by USA SPEC, Inc. is
under license.
Siri® is a registered trademark of Apple, Inc.
Cortana is a registered trademark of Microso Corpora on in the
United States.

11
TROUBLE SHOOTING
• My wireless remote control does not work (the LED
indicator will not light up when I tap the funcon
icons).
1. Make sure the baery’s protecve film has
been removed.
2. Perform p.7 ‘s step 2-5 under the “Low
Baery” secon.
• I don’t hear the “connected” voice prompt when I
start my car.
1. Make sure your radio is in AUX mode. If you’re
in AM/FM or CD/SAT mode then you will not
hear either the voice prompt or the caller #
announcement.
2. Make sure the voice prompt feature is
enabled, see p. 8.
• My device's been paired and connected, but the
audio streaming audio is not coming through my
car's speakers.
Make sure the 3.5mm AUX cable is pushed all the
way into the factory AUX port.

12
• No maer how I adjust, both my phone call and
streaming audio level is very low.
1. Check your factory radio sengs. Some
radios' AUX volume control might be
independent from AM/FM.
2. While you're in a call, adjust the volume on
your phone to MAX then use the remote control
to adjust the volume to the desired level.