Eztronics Corp&reg; Flysky FS-R9B 2.4G 8-ch Receiver For Turnigy RX-9X8C 9x Fs-th9b 9ch Transmitter Channels: 8 Channels Model type: glid/helicopter/airplane RF range: 2.40-2.48GHz Receiving sensitivity:-105DBM Input Power:4.5-6.5V DC