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Description
HappyModel X12 ELRS Pro 5in1 AIO Flight ControllerSpecifications: Brand Name: Happymodel Item Name: X12 ELRS Pro AIO 5 IN 1 Flight controller built in 12A ESC and OPENVTX Betaflight firmware target: betaflight_4. 4. 0_STM32F411 VTX antenna: U. FL Weight: 5. 1g Size: 30mm*30mm*8mm Flight controller X12 ELRS Pro v1. 1 AIO 5 IN 1 Flight controller MCU: STM32F411CEU6 (100MHZ, 512K FLASH) ,ESP32 PICO D4 Sensor: ICM42688P(SPI connection) Mount hole size: 25. 5mm*25. 5mm Power supply: 1 2S battery input (DC
Specifications:
Brand Name: Happymodel
Item Name: X12 ELRS Pro AIO 5-IN-1 Flight controller built-in 12A ESC and OPENVTX
Betaflight firmware target:
betaflight_4.4.0_STM32F411
VTX antenna: U.FL
Weight: 5.1g
Size: 30mm*30mm*8mm
| Flight controller | X12 ELRS Pro v1.1 AIO 5-IN-1 Flight controller MCU:STM32F411CEU6 (100MHZ, 512K FLASH) ,ESP32-PICO-D4 Sensor: ICM42688P(SPI connection) Mount hole size: 25.5mm*25.5mm Power supply: 1-2S battery input (DC 2.9V-8.7V) Built-in 12A(each) Blheli_S 4in1 ESC Built-in Betaflight OSD(SPI Control) Built-in 5.8G OpenVTX 0mw~400mw (MSP control) Built-in UART ExpressLRS v3.0.0 Built-in voltage meter sensor , voltage meter scale 110 Built-in current meter sensor , current meter scale 470 |
| Onboard 4in1 ESC | Power supply: 1-2S LiPo/LiPo HV Current: 12A continuous peak 15A (3 seconds) Support BLHeliSuite programmable Factory firmware: Bluejay v0.19.2 Default protocol: DSHOT300 Recommend ESC Startup power value to min1100/max1200 |
| Onboard UART ExpressLRS 2.4GHz Receiver | Packet Rate option: 50Hz/150Hz/250Hz/500Hz ExpressLRS Firmware version: V3.0 RF Frequency: 2.4GHz Antenna : SMD antenna Telemetry output Power: <12dBm Receiver protocol: Serial_based CRSF Compatible with ExpressLRS V3.x.x TX Module Could flash single ELRS receiver firmware by Wifi ExpressLRS firmware target: HappyModel AIO 2.4GHz RX+VTX (ExpressLRS web flasher) Available from Expresslrs version 3.4.0 RC2 |
| Onboard 5.8g OPENVTX | Firmware version: OPENVTX MSP VTX PIT Mode support Channels:40ch Transmitting Power: 0/RCE/25mw/100mw/400mw Power supply: DC 5V Current (5v): <650ma (400mw) Antenna connector: U.FL |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.3 ★★★★★
Based on 451 reviews
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Product Reviews
★★★★★ 3
OK for the price, but overall comfort is avergae
Size: 934-Z, Color: Mustard
Easy to put together, color (mustard) accurate to images, and while I understand this is not a high-end chair, I feel like it still needs to be rated for its quality.
Pros: the seat cushions are fairly comfortable and it rolls well. Adjustable footrest is easy enough and mostly sturdy.
Cons: For a tall office chair, it doesn't go up high enough. I actually had to lower my standing desk to sit at it, which then isn't where I want it when I'm standing now. It's also a bit wobbly. The seat area's attachment to the post isn't as solid as it should be for a tall chair, so while sitting, it does tend to lean/slope forward and wobble side to side. The lumbar support is not adjustable, so I'm not even really sure what it does. And the armrests are not very comfortable to use. Since they are hard plastic, they are just a bit too rigid to rely on for any comfort. They are basically there to hold on to when you're getting out of the chair.
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Reviewed in the United States on May 29, 2026
★★★★★ 4
Good Value for a Tall Chair
Size: 934W-Z, Color: White
I have received this chair just today and would like to give my first impressions of it.
Height is super adjustable as well as the foot rest. My desk is very tall (~34 inches vs standard ~29 inches) and does not suit a standard height chair. This chair's height is enough to sit comfortably at mybut also still having adjustment to be even higher.
Lumbar support is a manual adjustment that can be adjusted by sliding the lumbar piece up or down and it seems it can be tiled as well.
No reclining feature or slight backrest tilt adjustment. I'm used to my chairs reclining so it feels a little awkward siting in a flat base and straight backrest. I feel like I'm sitting too forward or leaning forward slightly but is probably something I can get use to.
Easy to put together and feels very sturdy. Plastic parts of chair are made from a really sturdy plastic, like playhouse plastic materials. Wheels roll around carpet easily. Mesh seems to be a strong material, though the mesh feels kind itchy on bare skin.
Overall, I think this is a good chair to get if you're needing a tall chair for a good value and can sacrifice no backrest tilt.
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Reviewed in the United States on December 3, 2025
★★★★★ 5
Excellent value for money!
Size: 934W-Z, Color: Black, Size: 934W-Z, Color: Black
I absolutely love this office chair! I needed a chair that could support my standing desk without sacrificing comfort, and this one completely exceeded my expectations. It's incredibly sturdy and durable, well-made, and the height adjustment is super convenient, making it easy to find the perfect fit. Even during long hours of work, the seat is comfortable, and the ergonomic design effectively reduces pressure on my back and legs. I love its clean, modern look—it fits my home office perfectly. Assembly was quick and easy, and for this price, the quality is absolutely fantastic!
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Perfect chair!
Size: 934-Z, Color: Blue, Size: 934-Z, Color: Blue
I have an adjustable-height desk (also purchased from Amazon) and needed a drafting chair for those times when my body gets tired of standing. This chair fits the bill and then some! I put it together myself; it took me about an hour, but would take me about half that next time, since now I know what to do (and what NOT to do!). All the parts were there; there are even spare parts (see photo). All the holes were drilled in exactly the right places, too, which isn't always the case when I buy things from Amazon (my standing desk is a great example). The chair fits me; I'm short (5'3.5"), and often the seats of furniture are too deep for me to rest my feet flat on the floor. The depth of the seat on this chair is just a little over 18 inches, and with the adjustable footrest ring, it's perfect. I don't think a tall or heavy person would fit in it, to be honest. But it's perfect for those of us who are vertically challenged. I love that it glides easily on my hardwood floors and that it turns 360 degrees. The chair comes in numerous luscious colors, so take your pick! It is very sturdy, has good lumbar support, and the seat and seat back are very comfortable. And the arms flip up, which was an absolute must when I was shopping for this chair. I got it on sale, too -- $109.00 -- and I'm delighted with this purchase.
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Reviewed in the United States on April 23, 2026
★★★★★ 5
Excellent adjustable drafting chair
Size: 934-Z, Color: Blue
Excellent chair design, extremely comfortable and exceptionally easy instructions to follow making for simple assembly. Love the amply wide cushioned seat and ergonomic backrest. The height adjustment feature works perfectly as well as positioning of the foot ring . Having the ability to raise the arms is also a big plus! I highly recommend this product for attractive appearance, comfort features, functionality and operation. Really nice chair!
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Reviewed in the United States on April 13, 2026