The FTr16S is a double antenna bidirectional receiver using the AFHDS 3 protocol. It's compact, easy to install, and can output using a standard PPM or i-bus/s.bus signal. Features: The FTr16s is a double antenna bidirectional receiver using the AFHDS 3 protocol. It's compact, easy to install, and can output using a standard PPM, I-BUS/S. BUS signal. The FTr16S receiver is compatible with the PL18 transmitter and all AFHDS 3 transmitters and FRM302 RF modules. With a compact size and light-weight, no worry to give any burden to your RC drone. Warranty: If there are any problems, please contact our store in time. We will give you a satisfactory solution. Specification: Product Model: FTr16S PWM channel: None Wireless frequency: 2.4GHz Wireless protocol: AFHDS 3 Range: 3500m (air) Antenna type: dual antenna (92.5mm * 2) Power: 3.5-8.4V RSSI: Supported Data port: i.bus / s.bus / PPM Temperature range: -10 + 60 Humidity range: 20% -95% Online Update: Yes Dimensions: 20 x 12 x 3.1mm Weight: 2g Package Information: Size: 8 x 4 x 2 cm Weight: 3g Package List: 1 x Receiver