Happymodel Crazybee F4 Pro V2.1 2-3S Compatible Flight Controller for Sailfly-X FPV Racing Drone Frsky/Flysky/DSM-X Protocol RX

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Product Details

Pre-sale item , will available in May 20th .

Detail

controller

(Frsky version) CRAZYBEE F4FR PRO V2.1 Firmware target: CrazybeeF4FR

(Flysky version) CRAZYBEE F4FS PRO V2.1 Firmware target: CrazybeeF4FS

(DSM-2/DSM-X version) CRAZYBEE F4DX PRO V2.1 Firmware target: CrazybeeF4DX

(No RX version) CRAZYBEE F4 PRO V2.1 Firmware target: CrazybeeF4DX

MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
Sensor: MPU-6000(SPI connection)

Board size: 28.5 * 28.5MM
Power supply: 2-3S battery input (DC 7.413V)

Built-in 5A(each) Blheli_S 4in1 ESC Dshot600 ready

Frsky version Built-in SPI Frsky receiver with telemetry(D8/D16 switchable)

Flysky version Built-in SPI Flysky receiver with telemetry(AFHDS/AFHDS2A switchable)

DSM-2/X Version built-in Serial-based DSM-2/DSM-X compatible satellite receiver

No RX version need to add external Receiver

Built-in Betaflight OSD(SPI Control)

Built-in Current meter Max 28A

Current meter scale set to 1175

Built-in 5V 1A BEC with LC filter

Built-in voltage detection

Onboard 4in1 ESC

MCU upgraded to EFM8BB21

Power supply: 2-3S LiPo/LiPo HV (7.4v/13v)
Current: 5A continuous peak 6A (5 seconds)
Support BLHeliSuite programmable
Factory firmware: S_H_50_REV16_7.Hex
Default protocol: DSHOT600

Frsky receiver Version

SPI BUS receiver

Frsky D8/D16 switchable

Compatible both Non EU and EU-LBT transmitter Channels: 8ch or 16ch

EU-LBT support(need to update betaflght v4.0 date 2019-04-11)

Failsafe support

No ground interference ( Transmitter and receiver 1 m from the ground): 300m

Flysky receiver Version

SPI BUS receiver

Protocol: AFHDS and AFHDS-2A Switchable

Channels: 8ch(AFHDS) or 14ch(AFHDS-2A)

No ground interference ( Transmitter and receiver 1 m from the ground): 300m

Failsafe support

DSM-2/DSM-X receiver version

Serial bus receiver

Protocol: DSM-2/DSM-X compatible

Channels:6-9 (Depend on your radio)

No ground interference ( Transmitter and receiver 1 m from the ground): 300m

PNP No RX version

No RX version support external serial-bus receiver like xm+, crossfire, S-FHSS etc.



Item Specifics
Brand Name:
Happymodel
Material:
Composite Material
RC Parts & Accs:
Receivers
Upgrade Parts/Accessories:
Frame
Remote Control Peripherals/Devices:
Receivers
Four-wheel Drive Attributes:
Assemblage
Tool Supplies:
Assembly Category
For Vehicle Type:
Helicopters
Model Number:
Sailfly-X
Use:
Vehicles & Remote Control Toys
Shipping & Payment

SHIPPING AND DELIVERY

We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-20 Business days
Canada, Europe 10-20 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.

REFUNDS & RETURNS POLICY

Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.

Refunds

Your satisfaction is our #1 priority. Therefore, if you’d like a refund you can request one no matter the reason.

If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.

If you received the wrong item you can request a refund or a reshipment.

If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of SAJAKS Favorites (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of www.sajaksfavorites.com

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.

Exchanges

If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

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