1. EDGETX/OPENTX Open Source 2. Upgrade The Main Control Chip To Use STM32F407 3. New Hall Remote Control, No Need To Disassemble The Shell, Easy To Adjust The Stroke 4. Upgraded Back Grip For Better And Tighter Grip 5. The Side Slider Is Upgraded And Easy To Move. 1. Transmission Frequency: 2.400ghz-2.480ghz 2. Transmitter Module: Single-Chip Multi-Protocol High-Frequency Module (Cc2500)/Expresslrs Built-In Module (ELRS) 3. Supported Protocols: , Hitec, Futabas-Fhss, D16/D8, Radiolin, , Etc. (Multi-Protocol Version), Expresslrs (ELRS Version) 4. Transmit Power: Maximum 20dbm 5. Antenna Gain: 2db 6. Working Voltage: 6.6-8.4V DC 7. Remote Control Distance: 2km @ 20DBM 8. Open Source Firmware: Edgetx (Remote Control)/Diy-Multiprotocol-Tx-Module (High Frequency Module)/Elrs 9. Number Of Channels: Up To 16 Channels (Depends On Receiver) 10. Display: 128x64 Monochrome Lcd Display 11. Joystick: Hall Version 12. External Module: JR/ Compatible Module Socket 13. Upgrade : Support Usb Online/SD Card Offline Upgrade Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:plastic Package Contents: 1 x Remote Control 1 x Connecting Cable 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.