TranzIt BLU
TranzIt BLU
Smartphones & Tablets
A Division of AAMP of America™
13190 56th Court, Clearwater, FL 33760
©2011 AAMP of Florida Inc.
Table of Contents
1. Introduction
2. ISFM21 Components
3. Installation Options
4. Frequency Selection and
App Operation
5. Bluetooth pairing and connecting
6. Troubleshooting
7. Warranty Information
1. Introduction
Thank you for choosing the iSimple ISFM21 as your audio input solution. The ISFM21 (TranzIt
BLU) is designed to provide the connecting link between your Android powered device with
Bluetooth, and your vehicle. This interface provides a Bluetooth connection point for your
android phone, or tablet, and delivers streaming audio directly into your radio.
2. ISFM21 Components
• Radio input module
• Application (Free download from android market)
3. Installation Options (Choose A or B)
The ISFM21 interrupts the incoming antenna signal when in use, to deliver the cleanest
audio possible from your device. To regain standard FM operation without interruption,
simply pause the android device, and approximately 8 seconds later the full FM band will be
accessible. There is also a power on/off/auto option in the TranzIt BLU app. If manual power
on/off control of the ISFM21 is desired, disconnect the “loop plug”, and plug the “optional
toggle switch” into the power harness, in its place. This will allow the user to turn the ISFM21
on or off at any time.
A. Connecting to any FM equipped radio
1) Red Wire. Connect to switched accessory power (not constant)
2) Black Wire. Connect to ground.
3) Antenna input. Connect antenna lead from the vehicle.
4) Antenna output. Connect antenna lead into back of radio.
Note: Antenna
may be needed
for select vehicles!
to any
FM equipped
The ISFM21 is compatible with amplified antenna systems, and adaptors.
Android phone or tablet
(not included)
Antenna In*
Antenna Out* ground
switched accessory
Connecting to any
FM equipped radio
Android phone or tablet
Loop plug
Antenna In*
Antenna Out* ground
Optional toggle switch
switched accessory
(not included)
B. Connecting
Connecting to aISFM21
radio equipped
equipped with
with an
an RCA
1) Red Wire. Connect to switched accessory power (not constant)
2) Black Wire. Connect toLoop
Android phone or tablet
3) RCA connections.Antenna
UseIn*these connectors when(not
radio is equipped with an
Optional toggle switch
Antenna Out* ground
RCA audio input. Connect a short pair of stereo RCA cables to this output, and
switched accessory
into theto
aux input.
equipped with an RCA auxiliary audio input
The antenna connectors are not used in this configuration.
Android phone or tablet
Loop plug
Side of
Antenna In*
Optional toggle switch
Antenna Out* ground
to auxiliary
input on back of radio
(not included)
Loop plug
Optional toggle switch
controlled | 106.3 | 88.3 | 87.9
Side of
to auxiliary audio
input on back of radio
4. Frequency Selection and
App Operation
Antenna In*
Antenna Out* ground
switched accessory
Loop plug
Selecting the ISFM21 Frequency
Optional toggle sw
to auxiliary audio
The factory-set operating frequency is 88.3 FM. If an alternate frequency is desired,
input on back of radio
frequency may be easily adjusted using the selector switch on the side of the module (see
illustration). For full frequency tuning control,
ofthe Android Market to download the free
app for TranzIt BLU.
controlled | 106.3 | 88.3 | 87.9
5. Bluetooth Pairing and Connecting
To pair your Android device with the ISFM21(this is only required the first time you use
the TranzIt BLU, after being paired, it will automatically reconnect with the android device
when returning to the vehicle)
A. Turn the vehicle on.
B. Open your device’s Bluetooth settings menu, and search for new
Bluetooth adaptors.
C. Select the device called “TranzItBLU”. Choose “Connect”
Note: If pairing is not successful within the first 2 minutes after turning the vehicle on, cycle
ignition off, then begin again at step A
6. Troubleshooting
No Audio from the Android
1) The radio is not set to the
correct station
Tune to the default frequency: 88.3FM
2) Device is not paired
Please reference section 5
for device pairing.
ISFM21 is active.
Pause the andorid device, and wait 8
Noise / static on regular FM
Access the ISFM21 App, and select the
OFF option.
Audio is distorted
The input from the android
source is too loud.
turn down the volume on the android
source until distortion is no longer
Can not find TranzIt BLU
when searching bluetooth
The TranzIt BLU is no longer in
pairing mode (lasts 2 minutes
after key on)
Turn the vehicle off, then back on again,
try to pair within the first 2 minutes of
key on.
Message appears on
adnroid device If a
message appears on your
device sating “Pairing
unsuccessful” Make sure
“TranzIt BLU” is turned
on, in range, and is ready
to pair.
The device did not properly
establish a bluetooth connection
Press "Connect" aagin. If pairing
continues to fail, cycignition off, back on
and try pairing again.
The ISFM21 gain is set too low
Adjust the gain setting on the back side
of the ISFM21
7. Warranty Information
One Year Limited Warranty
The quality controls used in the manufacture of this product will ensure your satisfaction.
This warranty applies only to the original purchaser of this product from an authorized
iSimple® dealer. This warranty covers any supplied or manufactured parts of this product that,
upon inspection by iSimple® authorized personnel, is found to have failed in normal use due
to defects in material or workmanship. This warranty does not apply to installation expenses.
Attempting to service or modify this unit, operating this unit under conditions other than the
recommended voltage will render this
Unless otherwise prescribed by law, iSimple® shall not be liable for any personal injury, property damage and or any incidental or consequential damages of any kind (including water
damage) resulting from malfunctions, defects, misuse, improper installation or alteration of
this product. All parts of this iSimple® product are guaranteed for a period of 1 year as follows:
Within the first 12 months from date of purchase, subject to the conditions above, iSimple®
will repair or replace the product at our discretion, if it is defective in material or workmanship
providing it is returned to an Authorized iSimple®’ dealer, with PROOF OF PURCHASE from
an authorized iSimple® dealer.
This equipment may be reset by unintentional electrostatic discharge during operation.
Exposure to direct sunlight or extreme heat may cause damage or malfunction.
FCC Class B Radio Frequency Interference Statement
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of 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 in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
1. Re-orientate or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that of which the receiver
is connected.
4. Consult the dealer or an experienced radio / television technical for help.
Notice : The changes or modifications not expressly approved by the party responsible compliance could void the user authority to operate the equipment.
For best performance, have it
professionally installed.
A division of AAMP of America™
13190 56th Court Clearwater, Florida 33760
Ph. 866-788-4237
©2011 AAMP of Florida, Inc.
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