Multi-functional FM stereo transmitter module microphone wireless transmitter wireless microphone module

Product Description
I. product features:advanced digital audio signal processing technology (DSP) and FM phase-locked loop modulation technology (PLL) are used to make sound quality more lifelike, performance more stable and long working frequency free of deviation.LCD display is more intuitive and accurate, with extremely low power consumption and minimal noise interference.built-in 30 digital volume adjustment, button operation can be completed easily.Power off automatically remembers the data before power offautomatic switching of multi-channel audio inputadopt quartz crystal to stabilize the frequency, and the transmission frequency will not drift when the temperature changessupport serial command control
2. Product parameters:Output power: 100mWFrequency range: 50hz-18khzEmission frequency:Shut down 87.0mhz-108.0mhz and open 76.0mhz-108.0mhzFrequency adjustment steps: 0.1mhz/time (short press), 1.0mhz/time (long press)Modulation mode: standard FM frequency modulationAudio channel: LINE/USB channel (stereo), MIC channel (mono channel)Equivalent noise: no more than 30dB (the sound quality is close to that of CD)Power supply voltage: dc 3.0v - 5.0vWorking current :35mATransmitting antenna :75cm rod antennaLaunch distance: FM launch module is connected with 75cm standard pull-bar antenna, the radio is used with desheng pl-660, and the field measured coverage radius is 100 meters.(note: the launch distance is for reference only, slightly different due to different operating environments)
3. Instructions:
< 1 > : the power supply
The module's corresponding port -, + is connected to the negative terminal and positive terminal of the power supply (battery) respectively. The power supply is recommended to use battery or other stable power supply.Do not use switching power supply without filter (such as mobile phone charger, and other low-quality switching power supply), otherwise the interference from power supply will affect the normal operation of this module.The normal working voltage of this module is 3.0-5.0v, and the power supply voltage should not exceed this range.
< 2 > : buttons
Volume +/- : short press volume +/- 1, long press continuous +/-
Frequency +/- : short frequency quantity +/- 0.1mhz, long continuous +/- 1MHZ
Mute: short press toggle mute/non-mute
< 3 > : antenna
ANT port is used to connect FM antenna. In order to better transmit FM signal, it is recommended to connect external 75cm rod antenna, and there is no obstacle blocking near the antenna as much as possible.
<4> : USB audio connection
If you need this module's USB audio broadcast function, you also need to connect the USB cable to the computer.USB port is compatible with ordinary mobile phones, so you can use mobile phone USB cable to connect modules and computers.Since the USB of the computer is equipped with 5V output, the computer can be connected with the USB port directly to provide power for the module.After connected to the computer USB, this module will automatically into PC audio broadcasting mode, the LCD screen will display the PC, PC will automatically install the driver, and give a name to this module "CD002" sound equipment, in computer voice Settings enabled and enabled the "CD002" audio equipment, computer audio can be launched by means of this module is to FM radio, near the radio frequency to adjust to, and this module launch frequency is consistent can hear this module of PC audio system.
<5> : LINE audio connection
If you need the LINE (LINE input) channel of this module to be transmitted as the audio source, you only need to insert one end of the audio LINE into the 3.5mm audio jack of this module and the other end into your audio device (such as the phone headphone jack). At this time, the module will automatically switch to the LINE channel to be the audio source of FM transmission.As long as the nearby FM radio is adjusted to the same frequency as this module, the audio can be heard from the mobile phone.
<6> : FM wireless microphone
If you need the MIC of this module to be transmitted as the audio source, you only need to unplug the LINE and USB cable (that is, the LINE and USB are not connected). The module automatically turns to the MIC channel as the transmitting audio source of FM. This module has a highly sensitive electret microphone, which can be applied to wireless microphones, maternal and infant monitoring, etc.When using, pay attention to coordinate and adjust the emitting volume of this module to achieve the best sound pickup effect.
<7> : serial port control (no serial port control function is needed for this part)
TTL level serial port control interface is reserved in the module. TTL serial port needs to connect UART_RX, UART_TX and GND in communication with this module. Relevant functions of the module can be controlled by external MCU (single chip computer) or computer serial port.Note: since the computer serial port level is not TTL level, it is necessary to connect the computer to communicate with the RS323 level to TTL level flat replacement device or use the USB to TTL level serial port module to communicate with this module.Because the serial command control module needs some computer expertise, do not understand the buyer need not trouble.See baby's instructions for all information. Customer service does not provide technical guidance in this regard.
about US
Shenzhen Ruize Technology Co., Ltd., is a well-known electronic component company.
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Shenzhen Ruize Technology Co., Ltd. Email
ruizeinc@ outlook.com
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