Medium Wave AM Radio Transmitter DIY Module penetrate through certain buildings
Transmit Power: Adjustable 20mW - 500mW (usable within 5-10m). RCA Male Plug to Bare Wire Cable For CD DVD Player Tuner Amplifier Audio Speaker. 1 x Module. Audio Input: 3.5mm both-end (on-board). Audio Source: CD, desktop, cell phone, etc.