ماژول گیرنده fm با کلید های کنترلی

Basic parameters:
Operating voltage: DC 3V-6V
Working current: about 25mA
Audio output: up to 20mW (0-15 level cycle adjustment)
Operating frequency range: 76-108 Mhz
Frequency adjustment mode: key adjustment
Antenna connection: can be individually cited, the default is connected to the audio output line
Scope: FM stereo radio, fixed frequency receiver, wireless audio transmission
Module Features:
  1) board design of the audio interface, you can directly insert the headset or audio signal line, the use of very convenient.
  2) module with a regulator chip, wide operating voltage, good stability.
  3) The back of the module with 5 small buttons, easy to set the frequency, the output audio power.
  4) The module width is just 5 battery diameter, easy to install the battery box.
  5) The module supports setting the output volume
  6) module operation is simple and convenient, support semi-automatic search
  7) module can directly drive the headset to the module power to form a high-quality FM stereo radio
  8) Subwoofer function on
Instructions:   
 S1 :  frequency minus  0.1Mhz  (long press S1 button for 3 seconds, restore to 76.0mhz  )
    S2 : frequency plus  0.1Mhz (long press S2 button for 3 seconds, return to 115.0mhz)
    S3 : volume down (long press S3 button for 3 seconds, return to 100mhz)
    S4 : volume plus
 S5 : On / off
 Led lights: module power after the green light that power on, boot state led lights for the green, off the state led lights for the red,
Key operation prompt: in the boot state, the normal led lights under the green, the operation of the button, led lights for the red,
note:
Module power after 3 seconds into the working state, each time the key operation will automatically save 3 seconds. When you do not know the module's operating frequency, you can press the S1 button to restore the default value of the module: 100MHz, the volume of 8
The module is made using a phase-locked loop chip, so the work is very stable, even if the human body touch the antenna will not cause changes in the module frequency, you can rest assured that use. Module power to receive, receive antenna with headphone cable and can also be used to separate the antenna, the choice of soft wire or rod, the effect is better.
    Modules are factory calibrated by the spectrum analyzer, the quality can be assured