D4R-II receiver 4 channels ACCST FR-SKY
- Firmware upgradeable
- One external analog telemetry port and one digital data-stream port (connect to FrSky Sensor Hub FSH-01)
- RSSI (PWM) and CPPM output - If CH3 and CH4 are connected by a jumper, CH1 will output CPPM for CH1~CH8, and CH2 will output RSSI (PWM)
- Lighter weight and physically smaller
- Alarm warning on low voltage, poor reception, etc.