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) Product appearance and printed text may vary by batch; this does not affect functionality. Color: Blue Material: PCB Package Contents: 1 x MR900-22 1 x IPEX MHF1 Dipole Antenna Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3cm.