Mini FM Transmitter
    Product # 10402
    Mini FM Transmitter
    Product # 10402
    In Stock This item should ship tomorrow (2/8/2016) if ordered within 17 hours 55 minutes

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    Mini FM Transmitter

    So you love listening to your own music, but don't have an auxiliary port or tape deck in your car? What you need is this Mini FM Transmitter from Monoprice!

    This FM transmitter can transmit the selected FM frequency to your car's radio in order to play music from your smartphone or MP3 player. Simply select an open radio frequency on the FM transmitter, and tune your radio to the same frequency. Any music played through the transmitter will play through your car's sound system.

    The transmitter can be tuned to any FM frequency between 88.1 ~ 107.9 MHz at 0.1 MHz intervals. It has a frequency response of 20Hz ~ 16KHz and an effective range of about 5 meters.

    The FM transmitter's 3.5mm plug can be used to connect to most smartphones and MP3 players' headphone jack. It uses your car's cigarette lighter/auxiliary power socket for power, so you don't have to worry about the battery dying during your favorite song.


    • Wireless audio transmission over the entire FM frequency range
    • Works with almost any smartphone or mp3 player
    • Built-in microphone lets it function as a hands-free communications device
    • Includes car charging cable adapter with an additional USB charging port

    Support Files:

    Model 10402
    Transmitter Frequency 88.1 ~ 107.9 MHz
    Frequency Tuning Interval 0.1 MHz
    Stability 10 ppm (+14 ~ +131°F)
    Clutter & Harmonic Distortion < -60dB
    Effective Range about 15 feet
    Frequency Response 20 Hz ~ 16 KHz
    Stereo Separation 40dB
    Audio Distortion < 0.1% (F=75KHz, f=1Khz)
    Signal/Noise Ratio > 45dB (1KHz 100%)
    Charger Output 5 VDC, 800mA
    Dimensions 2.2" x 1.4" x 0.5"
    Weight 1.2 oz.

    65 Reviews

    74% of the reviewers recommend this product


    Ehhh, It's... ok.

    • Joel M,
    •  Florence, KY 
    • 1/20/2016 8:56:20 PM

    Pros: Powerful enough to work on stations that aren't completely quiet
    Sound quality is good
    Fairly long cable
    Bright display

    Cons: Must stay plugged in to work, literally 0 battery life (is there even a battery?)
    High-pitched squeal just loud enough to be heard over the road when the audio is paused or at a quiet spot

    After my old FM transmitter (different brand, similar price range) gave out, I decided to check if Monoprice had one. They do, but this transmitter has a few shortcomings. Whenever it's plugged in (and I'm tuned to the frequency), there is a constant, high-pitched wail. It tends to get drowned out by whatever music or (in my case) podcast is playing, but any time the talking pauses and any time I don't have anything playing, it's annoyingly audible.

    It also apparently does not have a battery. The description says, "Includes car charging cable adapter with an additional USB charging port," which implies pretty strongly that the device itself benefits from the charging cable. The manual also says that it will turn off after a few minutes of non-use. But alas, it shuts off the instant I unplug it from the car. Maybe mine sat in a warehouse for too long?

    On the other hand, the sound quality's fine, and it doesn't have any trouble overcoming the staticky, only-half-empty stations we have around here.

    So, if you're ok with something that you have to plug and unplug every time you start and turn off the car, and if you listen to music or other audio with little dead air so it doesn't "squeeeeeeeeeeeeeeee" at you, it gets the job done.

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    • Anonymous,
    •  Brookhaven, GA 
    • 12/3/2015 2:05:29 PM

    Pros: Cheap
    Includes a USB slot to charge off 1 cigarette slot

    Cons: Poor quality

    I bought one of these a couple years ago and it was serviceable as a cheap alternative. It ended up breaking due to wire separation after a couple years of normal usage. So I bought a new one recently but I feel that the quality has decreased. I have occasional connection issues that I suspect are related to the 3.5mm jack not completely bridging with the jack in my phone. It also seems that the overall signal to noise quality has degraded noticeably.

    All in all now I kind of wish I had just tried something a little nicer.

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    Great Transmitter

    • Benito Lopez,
    •  Star, ID 
    • 11/3/2015 3:01:34 PM

    Pros: Easy to set up!

    Cons: None that I can think of!

    I had a transmitter that had a lot of interference and only three stations to set my Ipod to work thru the radio stereo....this product had several options and allowed me to find a station that did not have any radio interference. Works great!

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    • Melanie,
    •  Clinton Township, MI 
    • 10/29/2015 9:33:46 AM

    Pros: Small, easy/simple to operate, many FM frequency options, clear signal.

    Cons: None

    By far, the best FM transmitter I have ever purchased. Easy to use, clear signal, etc.

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    Great Value

    • Anonymous,
    •  Harker Heights, TX 
    • 9/20/2015 6:37:20 PM

    Pros: Small, simple to operate, clear signal. Does everything an FM Transmitter is supposed to do.

    Cons: None

    I have tried several different FM transmitters all the way back to the early iPod days. This is hands down the best one I've ever used. Small, simple and it works better than much more expensive transmitters I've used.

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