Check the listing for details. Hobby DIY Science Kit Project Simple FM Transmitter Voice 100M 80-103Mhz. Condition: New. Listed at 12.99 USD. thetechstreet presents : Electronics kit for FM Transmitter (1.5V -9V Operation) (A Complete electronics kit with PCB & Components & Circuit Diagram ) Microphone FM Transmitter kit : -Frequency range: 80MHz-103MHz (Adjust the coil pitch to change center Freq) -Working voltage: 1.5V -9V -Equipped with an external audio socket -Range: More than 100 meters at 4.5V voltage, -Antenna Included - 50cm long thin wire The transmit distance depends on the power supply voltage and the length of the antenna matching and impedance matching, open space, electromagnetic wave interference, receiving sensitivity of the receiver etc. This Kit Includes the following : Printed Circuit Board (PCB) with component layout. All components Used in the circuit Document with Circuit Description & Circuit Diagram. STANDARD NOTICE All Electronics Kits need Intermediate Soldering Skills to assemble & test the circuit. Transformer/Power Supply (if needed) is generally not supplied and needs to sourced separately. LEGAL NOTICE The risk of electrical shock is present in all Electronic Devices. We, the ebay seller will not be held responsible to any incidental or consequential damages arising out of either the assembly/test/use or mis-use of this electronic kit. At the most out liability will be limited to either a refund or a replacement of a part , if found defective before kit assembly. Please Email me if you have any questions!!