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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
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Description
HAKRC F4126 BLHELI_S 35A WHOOP AIO FCThe F4126 is HakRC's new whoop style flight controller ESC AIO board for ultralight and whoop build. This FC features a Barometer which is rare to see in this type of flight controller and can handle up to 4S power. Checkout all our Whoop Style Flight Controllers and the rest of our HAKRC products! Features: 1. PCB adopts high end 8 layer 2oZ thickened copper skin, which has stronger overcurrent capability and good heat dissipation. 2. MOS adopts
The F4126 is HakRC's new whoop style flight controller/ESC AIO board for ultralight and whoop build. This FC features a Barometer which is rare to see in this type of flight controller and can handle up to 4S power.
Checkout all our Whoop Style Flight Controllers and the rest of our HAKRC products!
Features:
- 1.PCB adopts high-end 8-layer 2oZ thickened copper skin, which has stronger overcurrent capability and good heat dissipation.
- 2.MOS adopts imported 30V high current resistance mos, long life and strong load capacity.
- 3Using industrial-grade LDO, high temperature resistance.
- 4.Using high-quality Japanese Murata capacitors, strong filtering performance
Flight control parameters:
- CPU: STM32F411CEU6
- IMU: IMC42688
- OSD: AT7456E
- Barometer: BMP280
- LED: Support WS2812 and other programmable
- Sensor: Built-in current sensor
- Firmware version: HAKRCF411D
- Size: 32* 32mm (25.5mm-26.5mm mounting hole)
- Net weight: 7g
ESC parameters:
- Firmware support: BLHELI_ S
- Protocol support: PWM, Oneshot125, Oneshot42, Multishot, Dshot150, Dshot300, Dshot600
- Input voltage: 2S-4S Lipo
- Continuous current: 35A
- Peak current: 40A
- Firmware version: BLHELI _S (G- H-20)
Wiring Diagram:
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Good buy
Color: Navy Blue, Size: Body（20"X 54"）
Nice and soft , well packaged and looks good. Kinda pillowcase you find in a luxury hotel
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Silky and Soothing
Color: Cream, Size: 2 Pack Queen（20"X 30"）
I thought I was getting 1 of the queen sized but I got 2. I got these for my Pomeranian's fuzzy pillow. He's always hot and these are very cooling and very good quality. He loves them and are very comfortable for him. They totally transformed his shaggy old pillow. I used the larger body pillow covers to replace the covers I had. They matched my bedspread perfectly. I use 2 body pillows along the exterior wall in my bedroom where there is cold coming through the floor in the winter. I'm sure I will enjoy them in the summer when it's hot too!
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Reviewed in the United States on January 10, 2026
★★★★★ 5
Cooling fabric is Just what I needed
Color: 03-black, Size: 20" X 26" (Pack of 4)
I'm a hot sleeper. These cooling pillow cases are fantastic. It has ended soaked pillow cases. I paired these with waterproof pillow cases for extra pillow protection. I now sleep cooler and wake up dry. I also toss and turn less and wake up less frequently hot, sweaty and uncomfortable and I can sleep though the night. I don't need to flip my pillows over because of sweat. Both sides of these pillow cases have arc chill cooling fabric. They're soft, silky, breathable and comfortable to lay my head on. The colors to choose from is a wide selection. These look great on my king size bed. I love this fabric so much that I upgraded all of my pillows and blanket sheets to cooling fabric. I'm sold on these. The zipper is premium, sturdy and durable. My pillows fit perfectly on these cases. The cooling material is top notch high quality to me with great craftsmanship. I liked these ones so much that I bought more and plan to again. My partner seen and felt these and immediately went online to buy some blankets to go with the pillow cases I gifted. I also bought my son these and a few cooling blankets. These work best with a fan or air conditioner. Highly recommended and you won't regret this purchase if you're a hot sleeper to profusely sweating during sleep.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
Cool and comfy!
Color: 01-grey, Size: 20" X 26" (Pack of 2)
Very comfy and cooling. Great for hot sleepers!
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Reviewed in the United States on June 3, 2026
★★★★★ 5
keeps pillow secured and cool
Color: 05-purple, Size: 20" X 26" (Pack of 4)
just what I was looking for. A cooling pillow case with a zipper! my regular pillow cases slipped off my pillows So annoying. Now my pillows are staying put zipped in. so soft and cool. no more wrestling with the pillow case while trying to flip my pillow over trying to find a cool spot.
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Reviewed in the United States on May 7, 2026