The wavelength of fiber on side is 1310nm<br> The interface is defined as: RX/TX/AV/VCC/GND<br> RX is connected to CRSFTX of flight control, and TX is connected to CRSFRX of flight control<br> The AV on side is connected to AV signal output port of flight control, and VCC power supply voltage is 5.5V~26V<br> Power supply: 5.5V-26V: (2S-6S battery)<br> Power consumption: less than or equal to 5W<br> Communication interface: MX-SH1.0mm-5P: CRSF interface/CVBS video port<br> Fiber optic interface: FC: Communication distance: maximum 20KM<br> Note: The product indicator lights from top to bottom are: power light, fiber optic light, video light, data light; GND is ground wire, VCC is power supply, AV is video, TX is TTL signal output, and RX is TTL signal input.<br> Due to different batches, there may be differences in product appearance, color, and printed text, which not affect use.<br> Color: Green<br> Material: PC+Plastic<br> Package Contents:<br> 1 * TX Module<br> Only above package content, other products are not included.<br> Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.