FrSky XSR-M full duplex telemetry receiver. The XSR-M is am ultra-small (20x20mm with 15x15mm mounting holes) SBUS/CPPM Radio Receiver offering full range and Smart Port telemetry.

Specifications

• Dimension: 20*20*1mm (L x W x H)
• Mounting Holes: 15*15mm
• Weight: 1.8g
• Number of Channels: 16Ch (1~16ch from SBUS channel, 1~8ch from CPPM channel) 
• Operating Voltage Range: 4.0~10V
• Firmware Upgradable
• Antenna: 15cm
• Compatibility: FrSky X-series Module & radios in D16 mode

Features

•  Smart Port enabled
•  S-BUS/CPPM output (BLUE LED stay lit indicates XSR-M in S-BUS mode, otherwise in CPPM mode)
•  How to switch S-BUS and CPPM signal: Long press the F/S button on the receiver for 3 seconds, the GREEN LED will flash thrice, indicating the switch is completed.