FM Transmitter Aux Modulator Bluetooth 5.0 Handsfree Car

Mobile phone chargers can be roughly divided into travel chargers, cradle chargers and maintenance chargers. Generally, users mainly contact the first two. And the most sold on the market is the travel charger.
There are also various forms of travel chargers. The common ones are the cheap duck egg-shaped miniature travel charger, the ordinary desktop card board charger, and the high-end desktop charger with crystal display. Mobile phone charger, also known as: mobile phone adapter, is actually composed of a stable power supply (mainly regulated power supply, providing stable working voltage and sufficient current) plus necessary control circuits such as constant current, voltage limiting, and time limiting. The output parameters marked on the charger (referring to the line charger): such as output 5.0V/1A, output 5.0V/1500mA-11200... refers to the relevant parameters of the internal regulated power supply. Understand this truth, you will know that a (good quality) mobile phone charger is easy to change into a good quality regulated power supply.
The chargers of lithium-ion (li-ion) batteries commonly used in mobile phones use a constant-current and voltage-limited charging system, and the charging current is generally around C2—that is, the charging rate is two hours. For example, a 500mAh is charged at 250mA in about two hours 4. Constant voltage charging after 2V.
The lion is not suitable for the -DV/DT detection fast charging method used by the NIMH advanced fast charger, because the lion has a strict limit on the charging current. Lithium ion (Li+) is very active, and high current charging is prone to danger. The general user contacts are mainly the first two. The most popular travel chargers on the market are travel chargers. There are also various forms of travel chargers. The common ones include cheap duck-egg miniature travel chargers, ordinary desktop card board chargers, and high-end desktop chargers with LCD display. device. In view of the fact that most mobile phone users are non-professional users, the chargers basically have the function of full self-stop, and most of the travel chargers are fast chargers, and the charging time is about 1-3 hours. Many chargers on the market advertise that they are controlled by microcomputers, including some very cheap duck-egg-type miniature travel chargers. In fact, strictly analyzed from the charging circuit, only a small number of chargers can be truly controlled by microcomputers (MCU control). .
Some manufacturers claim to be "microcomputer control" when they use integrated blocks on the charging circuit. In fact, many low-cost design integrated blocks are cheap op amp integrated blocks, while some dedicated charging control integrated blocks have higher unit prices. , generally used in relatively high-end or brand-name chargers. So we can't trust the so-called microcomputer control, especially the cheap products. Many products are similar in appearance but have very different internal circuits, and their performance is also very different.

 

 

Specifications:

Screen type: LED

Bluetooth Version:5.0

Memory Support: Up to 32GB (not included)

Power mode: 12V power supply

Source classification: U disk

Additional features: FM radio function, support for Bluetooth

Memory card type: SD card, mini SD card, micro SD card (not included)

Player Category: Car MP3

Signal to noise ratio: 85dBA

FM Frequency Range: 87.5-108MHz

Launch distance: 5m

 

Features:

Support FM channels, the car Bluetooth FM transmitter lets you enjoy your phone music when driving and plays a louder and clearer phone navigation voice on car stereo.

Support Bluetooth hands-free phone calling via built-in microphone, just press the button to answer phone call, very convenient and keep your driving safe.

Support TF card and USB flash drive reading (up to 32GB Max), can play music files on FLAC/MP3/WMA/WAV format.

Dual USB ports with Max. 5V / 3.1A output, support smart charging, automatically identify all kinds of mobile phones / tablets / mp3 / mp4, provide and output the best and fastest charging current.

Support voltmeter function, the screen will display the car voltage when it is turning on.

Built-in intelligent management chip, effectively prevent over-temperature, over-voltage, over-current, short circuit and electromagnetic interference.

DC 12-24V voltage input, suitable for all vehicles, applicable to most cars, trucks, off-road, etc.

 

Package included:

1 x Car MP3 Player FM Transmitters