This is the Futaba R614FS 2.4GHz FASST 4-Channel Receiver and is compatible with the Futaba 4PK/4PKS/4PKSR and 4PX/4PXR/7PK Surface Radio Systems operating in C2 mode.
NOTE: This receiver is NOT compatible with 2.4GHz FHSS, S-FHSS or T-FHSS systems. Features:
Specifications: Size: 1.38x0.91x0.33" (35.1x23.2x8.5mm) Weight: 0.28oz (7.8g) Operating Voltage: 3.7V~7.4V Usable Voltage: 3.5~8.4V Number of Ports: 5 PWM Output: 4 SBUS Ports: 0 SBUS2 Ports: 0 FASST: Yes Telemetry: No S-FHSS: No High Speed: Yes High Voltage: Yes Connector: J (STND) Range: Full Range
NOTE: This receiver is NOT compatible with 2.4GHz FHSS, S-FHSS or T-FHSS systems.