1. All Remote Control Products Have Been Coded Before Leaving The Factory, And You Do Not Need To Code Them Again. If You Need To Code With Other Transmitters Or Receivers, You Must Do It As Follows Before Use, Install The Battery Into The Transmitter And Turn Off The Transmitter. Plug The Pairing Cable Into The Battery Channel Jack Of The Receiver. 2. Connect The Receiver Battery To Any Channel Of The Receiver. The Red Indicator Light Of The Receiver Flashes To Indicate That It Is In The Binding State; And Hold The Binding Button Of The Transmitter Without Letting Go, And Turn On The Transmitter At The Same Time. 3. The Red Indicator Light Of The Receiver Stops Flashing, Indicating That The Code Binding Is Successful. Disconnect Receiver Power. 4. Turn Off The Transmitter Power. Connect All Servos To The Receiver, And Then Connect The Battery To The Receiver; Check If All Servos Are Working Properly As Required. 5. If The Code Matching Fails, Please Follow The Above Steps And Over From The Beginning. 1. Pwm Channel: 6 2. Wireless Frequency: 2.4G 3. Wireless Protocol: Afhds 2A 4. Remote Control Distance: 500-1500m (Air) 5. Antenna Type: Double Copper Tube Antenna (150mm x 2) 6. Power Supply: 4.0-8.4V 7. Rssi: Support 8. Data Interface: PWM/PPM/I.Bus/S.Bus 9. Temperature Range: -10℃-+60℃ 10. Humidity Range: 20%-95% Note:The picture is a high-definition rendering. Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use. Colour:As Shown Material:plastic Package Contents: 2 Set x Model Aircraft Receivers (Including Code Matching Lines) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.