Advanced Communication Technology: Equipped with MAVLINK protocol for enhanced data transmission, ensuring reliable and efficient communication over long distances. High Precision TCXO: The Temperature Compensated Crystal Oscillator ensures stable frequency operation, critical for maintaining connection in varying climatic conditions. Optimized for RC Models: Specifically designed to boost the performance and range of remote control models, making it ideal for hobbyists and professionals alike. RF Frequency: 900MHz (868MHz, 915MHz FCC) RF power: -9dBm(min) / 0dBm / 10dBm / 20dBm / 22dBm (158mW) Antenna connector: IPEX MHF-1 2x buttons for Boot mode and Bind Power supply: 4-9V DC @ "V" Pad Power dissipation: 67mA@5V IN(31Hz, 22dbm) The product appearance and printed words depending on the batch, but this does not affect use. Colour:Blue Material:PCB Package Contents: 1 * MR900-22 1 * IPEX MHF1 Dipole Antenna 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.