The FrSky D8R-XP 8 Channel Telemetry Receiver is Compatible with FrSky DFT, DJT, DHT and DHT-U two way telemetry modules, is firmware upgradeable, lightweight and features an alarm notification for things like low voltage, poor radio reception and more.

Features: 

• Two external analog telemetry ports (A1&A2) and one digital data-stream port (Rx)
• 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)
• When side port pins of A1 and X are connected by the jumper, A1 will change from external analog telemetry port to internal built-in battery voltage sensor
• Firmware upgradeable
• Alarm warning on low voltage, poor reception, etc.

Specifications: 
Dimension: 55x25x14mm 
Weight: 12.4g 
Operating Range: full range (>1.5km) 
Operating Voltage Range: 3.5~10V 
Operating Current: 100mA 
Number of Channels: 8ch