Digital FM Transmitter 3 Send Near Broadcast Quality Stereo Audio from Your Mobile Phone or Any Audio Device to A Nearby FM Radio. Broadcast at Churches, Gyms, Correctional Facility & More

FCC compliant. Maximum distance is about 45 feet line of sight with no obstructions. Broadcast distance will vary depending on location. Frequency Range 87.5 MHz and 108 MHz.
AC adapter included, or 2 AA batteries (not included).
Weight: 5.8 oz. Size 3" W x 3.5" H x 1" D. 1-year limited warranty. U. S. based tech support.
Product Description

How FM Transmitters Work

FM transmitters are great devices that serve a wide variety of applications. These devices are typically connected to the headphone jack (or audio output jack) of an audio source and are able to transmit the audio on vacant FM frequencies. These wireless FM broadcasts can then be received by any FM radio.

FM transmitters are often used to transmit audio from source devices like MP3 players, satellite radio receivers, etc. to car stereos, home theaters, or portable radios. Currently people are purchasing them to broadcast church services to their parking lot, hold mini drive in movies with their neighbors and hosting concerts in parking lots.

One point of confusion that often exists, is transmitting an AM signal over FM. The transmitter doesnt care what is on the audio signal, it just uses the FM broadcast band to send that signal to other devices on that same selected frequency.

One of the greatest benefits of FM transmitters is the fact that the transmitted audio signal may be received by any and all FM radios within range. As far as the radios are concerned, they are receiving an FM signal just like a normal FM radio station.