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Overview: The iSimple TranzIt BLU (ISFM21) lets you listen to your
Android smartphone or tablet through your vehicle's factory radio's FM tuner or Auxiliary input
using Bluetooth technology. You'll be able to listen to stored music, music
apps, audiobooks, podcasts, and more from your compatible Android device through
your vehicle's factory stereo.
Compatibility: The iSimple TranzIt BLU (ISFM21) is compatible with
Bluetooth-enabled Android smartphones and tablets. It can connect to almost any factory or aftermarket
in-dash head unit which features an FM tuner or Aux input.
Installation Options: The iSimple TranzIt BLU features a wired FM
transmitter with Motorola antenna input/output connections and is fitted with
stereo RCA outputs, so it can connect to your factory radio via its FM radio or
- For a wired FM transmitter installation, you will need to unplug your
factory antenna from your factory radio. The TranzIt BLU's male Motorola
connector will plug into your factory radio's antenna port and your factory
antenna will then plug into the TranzIt BLU's female Motorola jack.
- Using the stereo RCA outputs, you can connect the TranzIt BLU to your
factory radio's auxiliary input (if equipped). An RCA-to-minijack adapter
(sold separately) may be needed.
Note: The TranzIt BLU also requires a hardwire power and ground
Bluetooth Operation: The iSimple TranzIt BLU features
built-in Bluetooth A2DP. Once connected to your factory radio, the iSimple
TranzIt BLU wirelessly receives audio from your compatible Android device via
Bluetooth, and then sends the audio to your factory head unit via FM radio or
Aux input. Now, you can listen to stored music and music apps on your Android
Bluetooth-enabled device through your factory stereo. You'll will continue to
control your music and music apps from the Android smartphone or tablet.
Note: Your Android Bluetooth-enabled device will need to be paired
with the iSimple TranzIt BLU. After being paired, the TranzIt BLU will
automatically reconnect with your Android device when returning to the
FM Frequency Selection: The factory-set operating frequency is 88.3
FM. If an alternate frequency (106.3 or 87.9) is desired, the frequency may be
easily adjusted using the selector switch on the side of the module. For full
frequency tuning control, download the TranzIt Blu app for your Android device.
Make sure your factory radio is tuned to the same frequency.
Auto Interrupt + Toggle Switch: The TranzIt BLU automatically interrupts the
incoming antenna signal when in use, to deliver audio from your
Bluetooth-enabled Android device to your car stereo. To regain standard FM
operation without interruption, simply pause the Android device, and approximately
8 seconds later the full FM band will be accessible again. If manual power
on/off control is desired, you can connect the included toggle switch to the
TranzIt BLU's power harness, so you can manually turn the TranzIt Blu on or off
at any time.
Note: If you are using
the TranzIt BLU's auxiliary output, simply select the Aux input on your
in-dash receiver to hear audio from your Bluetooth-enabled Android device.
TranzIt BLU App: The free
TranzIt BLU app from the
Google Play App Store contains provides full control of
the iSimple TranzIt BLU interface through your Android smartphone or tablet
(requires Android 2.1+). The app allows for infinite channel selection, an
auto power on/off, and manual on/off option. The TranzIt BLU app enhances
control of the iSimple TranzIt BLU interface through your compatible Android
device, but is not required for basic operation.
- On/Off/Auto: On (turns FM radio interface on and keeps it on
while App is running), Off (turns FM radio interface off), Auto
(automatically turns FM radio interface on or off according to Bluetooth
- FM Broadcasting Frequency: Provides full-frequency tuning control
to tune the best performing FM frequency.
- FM Radio Region: Allows selection of FM radio region; North
America, Japan, or Europe.
Note: Using AUTO mode and while listening to certain sources of
music (such as Pandora) that have extended pauses between songs, it is
possible that the radio interface of the TranzIt BLU will disengage. When
this occurs, the FM radio will play through your car stereo again
momentarily. Once the next song begins, the TranzIt BLU will reengage and
your Android device will play through your car stereo again. The TranzIt BLU
behaves this way due to the Bluetooth A2DP signaling. If this functionality
is not desired, you can choose not to use the AUTO setting and instead
select ON in the TranzIt BLU App. This will provide a less disruptive