Description Flysky R4P Receiver ANT Protocol Specifications: PWM Channel: 4 Wireless Frequency: 2.4GHz Wireless Protocol: ANT Range: 100~300m (Ground) Antenna Type: Built-in single antenna Power: 3.5-8.4V RSSI: Not Supported Data port: PWM Temperature range: -10 ℃ — + 60 ℃ Humidity range: 20% -95% Online Update: No Dimensions: 22.6*20.6*25.5mm Weight: 6g Certification: CE,FCC