Sell 87-108MHz DC 3-5V PLL DSP Audio FM Radio Transmitter Wireless Microphone Module zbSU best price

❶the product features: 1: Use advanced digital audio signal processing (DSP) and FM phase-locked loop modulation (PLL) to make the sound more realistic, more stable performance, and no shift in long-term operating frequency. 2: LCD display is more intuitive and accurate, with very low power consumption and minimal noise interference. 3: Built-in 30-level digital volume adjustment, easy to complete by button operation. 4: Data after power failure automatic memory power failure 5: Multi-channel audio input is automatically switched 6: Using quartz crystal to stabilize the frequency, the temperature changes the transmission frequency and no longer drifts. 7: Support serial command control ❷the product parameters: Output power: 100mW Audio frequency response range: 50Hz-18KHz Transmission frequency: Turn off campus broadcast 87.0MHz-108.0MHz, turn on campus broadcast 76.0MHz-108.0MHz Frequency adjustment step: 0.1MHz / time (button short press), 1.0MHz / time (button long press) Modulation mode: standard FM Channel: LINE/USB channel (stereo), MIC channel (mono) Equivalent noise: ≥30dB (sound quality is close to CD sound quality) Supply voltage: DC 3.0V-5.0V Working current: 35mA Transmitting antenna: 75cm rod antenna Emission distance: The FM transmitter module is connected to a 75cm standard rod antenna, and the radio uses the Desheng PL-660. The open field is covered with a radius of 100 meters. (Note: The launch distance is for reference only, due to the difference in usage environment) ❹the use of instructions: <1>: Power supply The module corresponds to the port -, + is connected to the negative and positive terminals of the power supply (battery), and the power supply is recommended to use a battery or other regulated power supply. Switching power supplies without filters (such as mobile phone chargers and other inferior switching power supplies) cannot be used, otherwise the interference generated by the 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>: button Volume +/-: Short press volume +/- 1, long press continuous +/- Frequency +/-: short press frequency +/- 0.1MHZ, long press continuous +/- 1MHZ Mute: short press to switch mute/unmute <3>: Antenna The ANT port is used to connect the FM antenna. In order to transmit the FM signal better, it is recommended to connect the rod antenna with a length of 75cm, and there is no obstacle blocking near the antenna. Package: 1 x DC 3-5V Audio FM RadioTransmitter Wireless Microphone Module 87MHz-108MHz