Specifications:
Frequency Response: 50Hz to 18KHz
Emission Frequency: 87.0MHz to 108.0MHz(close campus broadcast), 76.0MHz to 108.0MHz(open campus broadcast)
Frequency Adjustment: 0.1MHz each time press button press, 1.0 MHz each time long press(press and hold) button
Modulation Mode: Standard FM
Channel: LINE/USB (stereo), MIC (single channel)
Equivalent Noise: ≥30dB
Input Voltage: DC 3V to 5V
Current: 35mA
Emission Distance: 100 meters(for reference only, tested with 75cm antenna on open ground).
Size: 49 x 26.5mm / 1.93 x 1.04″
Display Size: 24 x 15mm / 0.94 x 0.59″
Instruction:
1, Use battery or step-down transformer type regulated power supply as power source. Switch-mode power supply without filter such as power bank, phone charger, switch voltage regulated DC-DC module can NOT be used because the high frequency conversion interference of switch-mode power supply will affect this module.
2, If you need USB audio broadcast function, you need to plug in USB cable and connect module to a computer.
3, If you need LINE channel as a source of sound emission, plug on end of audio cable into 3.5mm audio socket, and the other end into your audio equipment (e.g. mobile phone), then the module will automatic switch to LINE channel.
4, If you need this module MIC as a source of sound emission, simply unplug the USB and LINE, and module automatically switches to MIC channel as the source of FM.
Note:
1, Power supply voltage must be DC 3V to 5V.
2, Do NOT touch the back of the module components when it is working, otherwise it will probably not work normally or burn out from a short circuit.
Package Includes:
1 x Module