Transmitter: Channel number: 9; Suitable for R/C airplanes helicopter car and ship; Also suitable for 4-axis and 6-axis aircraft; Transmitting power: <20dBm; Modulation: GFSK; System module: AFHDS; Resolution: 1024; Low voltage alarm: yes (8.6V); Analog port: Yes; Charging port: Yes; Power supply: 8 x AA batteries (8 x 1.5V) DC 12V; Receiver: Sensitivity: -100dBm; Module: GFSK; System module: 2AFHDS; Control loss protection: Yes; Code interface: CH7; Power interface: Yes (CH3); Power supply: DC 6V (4 x 1.5V); Instruction: install battery power off transmitter plug cable into receiver put receiver battery into VCC LED will flash; Then press BIND key of transmitter and power on if the LED of receiver is not flashing matching is succeeded (5s); Release BIND key pull code cable install server and power on to test; If test ok then plug power connector into VCC; Note: Above instruction is only suitable for 2.4GHz devices. CD: http://m5.img.dxcdn.com/CDDriver/CD/sku.324687.rar