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BETAFPV LiteRadio 2 SE Radio Transmitter-ELRS Version Mode 2 with Mobula6 ELRS 1S 65mm 2.4GHz ExpressLRS SPI Receiver

BETAFPV LiteRadio 2 SE Radio Transmitter-ELRS Version Mode 2 with Mobula6 ELRS 1S 65mm 2.4GHz ExpressLRS SPI Receiver Item NO.: F45251-A F45251-B F45251-C

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2.4GHz 195MHz 868MHz

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Product Name BETAFPV LiteRadio 2 SE Radio Transmitter-ELRS Version Mode 2 with Mobula6 ELRS 1S 65mm 2.4GHz ExpressLRS SPI Receiver
Item NO. F45251-A F45251-B F45251-C
Weight 0.43 kg = 0.9480 lb = 15.1678 oz
Category DIY RC Drone Accessories > DIY RC Drone Kit
Creation Time 2021-11-09

BETAFPV LiteRadio 2 SE Radio Transmitter-ELRS Version Mode 2 with Mobula6 ELRS 1S 65mm 2.4GHz ExpressLRS SPI Receiver

1XLiteRadio 2 SE Radio Transmitter-ELRS Version

Receiver option:

2.4GHz ExpressLRS SPI receiver

915MHz ExpressLRS Serial-based receiver

868MHz ExpressLRS Serial-based receiver

Spare parts specifications:


Mode: SE0702 KV26000
Stator Diamter:7mm
Stator Length:2mm
Shaft Diameter:Φ1mm
Motor Dimension(Dia.*Len):Φ9.5mm*14mm
No.of Cells(Lipo):1S only


Center Thickness:5mm
Prop Disk Diameter:31mm
Center Hole Inner diameter:1.0mm

Flight controller

ELRS F4 2G4 flight controller built-in SPI expresslrs 2.4G receiver
CrazyF4 ELRS flight controller built-in 915MHz expresslrs receiver
CrazyF4 ELRS flight controller built-in 868MHz expresslrs receiver
MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
Sensor: MPU-6000(SPI connection)
Board size: 28.5 * 28.5MM
Power supply: 1S battery input (DC 2.9V-4.35V)
Built-in 5A(each) Blheli_S 4in1 ESC Dshot600 ready
Built-in Betaflight OSD(SPI Control)
Built-in 5.8G VTX
Built-in ExpressLRS 2.4G/915MHz/868MHz receiver
Built-in 5V 1A BEC
Built-in voltage detection

Onboard 4in1 ESC

MCU upgraded to EFM8BB21
Power supply: 1S LiPo/LiPo HV
Current: 5A continuous peak 6A (3 seconds)
Support BLHeliSuite programmable
Factory firmware: O_H_5_REV16_7.HEX
Default protocol: DSHOT600

Onboard SPI ExpressLRS 2.4GHz Receiver

Packet Rate option: 25Hz/50Hz/150Hz/250Hz/500Hz
RF Frequency: 2.4GHz
Antenna : SMD antenna
Telemetry output Power: <12dBm
Receiver protocol:  SPI ExpressLRS
Could bind with Happymodel ES24TX , ES24TX Lite, ES24TX Slim and DIY
2.4GHz ELRS TX module ExpressLRS version 1.0.0 or 1.0.1 both compatible

Onboard Serial-based ELRS Receiver

Operation current: ~100Ma
Rx To FC protocol: CSRF
RF Frequency optional: 915mhz or 868mhz(EU)
Antenna connector:  IPEX4
Telemetry output Power: <17dBm

Firmware target: Happymodel_RX_ES915RX

Receiver protocol: CRSF

Could bind with Happymodel ES915TX , Frsky R9M and DIY ELRS TX module(need to flash the same version ELRS firmware)

Firmware flash via Betaflight pass-through

Onboard 5.8g VTX

Output power: 25mw~200mw
Frequency: 40CH
Input voltage: 3.3V 5.5V
Current consumption: 300mA(type)
Frequency: 5.8GHz 5bands 40 channels

With Race band 
Smartaudio ready

Runcam Nano3

Model: RunCam Nano 3

Image Sensor: 1/3" CMOS

Horizontal Resolution: 800TVL

Lens : 2.1mm(M8) FOV 160°

Signal System: PAL/NTSC Non Switchable

S/N Ratio: >50dB

Electronic Shutter Speed: Auto

Auto Gain Control (AGC): Auto

Min. Illumination: [email protected]

D-WDR: Auto

Day/Night: Color

Power:DC 3-5.5V

Current: [email protected]  [email protected]

Housing Material: ABS

Net Weight: 1.2g

Dimensions: L14mm*W14mm*H9mm

Lipo Battery

Continuous Discharge Rate: 30C
Size: 57mmx12mmx7mm
Weight: 8g

Connector: PH2.0

popular ExpressLRS 2.4G raido link protocol version is available for option now. Besides, this version supports BETAFPV Configurator which is a utility disigned to simply updating, configuring and tuning the radio controller.

Main board for LiteRadio 2/LiteRadio 2 SE owner replacement.

Download the BETAFPV Configurtor.

LiteRadio 2 SE Radio Transmitter is the upgraded version based on LiteRadio 2 and comes with huge improvements.

  • Built-in 1000 mAh 1S battery, LiteRadio 2 SE increases the endurance to 8 hours.

  • Updates with BETAFPV self-developed LiteRadio System. Pilots can directly operate the Joystick Calibration and Upgrade Firmware on the radio transmitter.

  • Supports the Frsky / Futaba / Bayang, pilots can easily change Futaba, Frsky D8, Frsky FCC D16, and Frsky LBT D16 mode via the radio transmitter.

  • Comes with 100mW transmitting power, LiteRadio 2 SE brings a wider operating range.

Please kindly note: D16 (FCC&LBT) protocol currently does not support the Frsky receivers with ACCST 2.0 firmware or higher, and it can only bind with ACCST 1.X firmware version XM+ receivers.

Bullet Point

  • LiteRadio 2 SE upgrades with BETAFPV self-developed Customized LiteRadio System. Pilots can directly operate the Joystick Calibration and Firmware Update on the radio transmitter, which is more convenient for the beginner racer to operate.

  • Equipped with a built-in 1000 mAh 1S battery, LiteRadio 2 SE can use up to 8 hours, bringing an excellent endurance performance. 

  • Comes with a built-in charging module, LiteRadio 2 SE can support USB charging which is more convenient to use. Meanwhile, it designs a Low-Power warning to indicate a low battery. While it needs to be re-charged(when the voltage is lower than 3.5V), the LED will turn red first, then it will turn blue and flash slowly. 

  • Compared with the LiteRadio 2, LiteRadio 2 SE has a larger transmitting power that can reach 100mW, bringing a wider operating range.

  • Adopted the rubber coat, LiteRadio 2 SE is ergonomic and has the shape of a gaming controller. It's comfortable to hold, and the anti-slip texture on the handles allows for a solid grip.

  • This radio transmitter acts as a USB Joystick when connected to a personal computer. So you could use it to play FPV simulators like EREADRONE.

  • LiteRadio 2 SE transmitter has been equipped on the Ready-to-Fly FPV whoop racing advanced kit 2 and FPV whoop racing starter kit 2. It is one of the easiest ways to get into the FPV hobby.


  • Item: LiteRadio 2 SE

  • Color: White

  • Frequency Range: 2.4G (2403MHz-2447MHz)

  • 2.4G System: NRF24L01 / CC2500 / SX1280

  • Channel: 8

  • Support Protocol: Bayang / Futaba S-FHSS / Frsky FCC D16/ Frsky LBT D16 / Frsky D8 / ExpressLRS 2.4G

  • Power: ≤100mw

  • Adapted Drone Type: Multirotor

  • Support USB Charging / Firmware Update

  • Support BETAFPV Simulator Connected / Customized LiteRadio System / Joystick Calibration

  • LED Light: Green-Power On / Red-Warning if the voltage is lower than 3.5V / Blue-Normal

  • Battery: Built-in 1000mAh 1S Battery

  • Charging Connector: USB 3.0 Type-C

BETAFPV Configurator

BETAFPV Configurator is utility designed to simplify updating, configuring and tuning the radio transmitter.

Download address: https://github.com/BETAFPV/BETAFPV_Configurator/releases

Function of BETAFPV Configurator is list below.

  • Basic radio controller setup, like mode switch, turn on/off RF modules.

  • Full function of the ExpressLRS configuration, like outpower, packet rate etc.

  • Channel mixer for fix wing drones.

  • Firmware update.

Only the radio controller ExpressLRS 2.4G version supports BETAFPV Configurator nowadays.

How to recognise if your radio transmitter supports the BETAFPV Configurator?
Remove the cover on the back of the transmitter and there is a label, comes with "BETAFPV Configurator Supported".

DO NOT power on the transmitter first and connect it to the PC. The USB port is invalid in this situation. 

How to switch the protocol

To change protocols (Frsky FCC D16, Frsky LBT D16, Frsky D8, or Futaba S-FHSS), you have to power it off first, then press and hold the bind button while you power it back on. After that, the flash times of the red LED before buzzer alarms will change, and it will indicate which protocol it is on. 

LED Status

Protocol Version

Flash Once

Frsky FCC D16

(Only supports ACCST 1.X version)

Flash Twice 

Frsky LBT D16

(Only supports ACCST 1.X version)

Flash Three Times 

Frsky D8

Flash Four Times

Futaba S-FHSS

Diagram of LiteRadio 2 SE

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