FrSky R9 and R9M radio control system is the first FrSky long range system which works in the frequency of 900MHz. The R9M module offers 4 switchable RF power outputs so you can choose the appropriate power for different flight situations. Compared to another FrSky 2.4GHz long range receiver like the L9R, the R9 receiver has a longer operating range up to 10KM and above. Moreover, the R9 is also a redundancy receiver which can connect to another receiver to ensure the security of your aircraft.
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Features:

● 900MHz/868MHz working mode

● Long range, low latency and high precision RC system

● 4 Optional RF power (Non-EU Version)

● Telemetry（25mW）/non-telemetry （500mW） mode

● Smart Port enabled and support telemetry data transmission

FrSky R9M 900Mhz Long Range RF Module

• Compatibility: R9 series
• Vin Voltage Range:4V-12.6V
• External Power Supply: 4V~12V (2s Li-Battery is recommended )
  (*3s Li-Battery is not recommended as external power supply, or it will damage)
• Telemetry Interface: Smart Port
• Upgrade Interface: Smart Port
• Modulations: PXX or CPPM (auto-detected)