TM-TX180 is a multifunctional high-fidelity stereo audio decoding transmitter which integrates Bluetooth audio decoding, U-disk music file decoding, computer USB sound card, AUX, FM transmission and AM signal modulation transmission. This board uses 0.96-inch OLED display screen to display the playing status and related information. Support decoding file format MP3/WAV/WMA/FLAC/APE when playing U disk in USB music mode. SBC/AAC audio transmission protocol is supported in Bluetooth mode, stereo line audio input is supported in AUX mode, USB cable can be directly inserted into computer USB hole as sound card in USB sound card mode to obtain better audio digital signal, and microphone input can only be input in AUX mode, which can be used for multiple extensions. This product panel is made of aluminum alloy. Power supply:DC12V FM transmitting frequency: 76-108MHZ AM transmitting frequency: 0.1HZ-15MHZ AM signal: First of all, in order to obtain high-quality and clear sound, sine wave signal is used for modulation. Compared with square wave, sine wave has pure spectrum and smooth amplitude, less interference, and it is easier to obtain high-quality signal. First, it is output as a modulation signal. Within the actual distance of 3 meters, the signal is clearer and cleaner, which is better than some radio stations. It can be used as modulation signal and test, and the actual transmission distance is small. Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. Voltage:AC100-240V Colour:As Shown Material:aluminum alloy Package Contents: 1 * FM Transmitter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.