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Description
Happymodel ExpressLRS Nano 2.4GHz EP1 RXThe Happymodel 2. 4GHz ELRS nano series receiver has an open source program based on ExpressLRS. Due to the low latency and high refresh rate RF module, they are very comfortable for FPV Racing and Long Range FPV. These are very suitable for Tiny whoops because of the ultra light and Nano size! The Series There are three in this series. The PP RX is designed by @Jye Smith from the ExpressLRS development team. Its main hardware architecture is
The Happymodel 2.4GHz ELRS nano series receiver has an open-source program based on ExpressLRS. Due to the low-latency and high-refresh-rate RF module, they are very comfortable for FPV Racing and Long Range FPV. These are very suitable for Tiny whoops because of the ultra-light and Nano size!
The Series
There are three in this series. The PP RX is designed by @Jye Smith from the ExpressLRS development team. Its main hardware architecture is STM32L432KBU6 MCU and SX1280 RF chip. It has a built-in ceramic antenna, which is super light and small in size.
The Update
On the basis of PP RX, Happymodel has developed the Nano 2.4GHz RX version of the ESP8285 named EP1 and EP2. The RF module of EP1/EP2 is the same as PP RX and uses ESP8285 MCU. You can upgrade firmware by WiFi! How simple!
Note: This is the EP1_RX Version.
VIDEO: HappyModel 2.4G ExpressLRS
Features
- Designed by Jye Smith on the ExpressLRS development team.
- TM32L432KBU6 MCU and SX1280 RF chip.
- High-refresh-rate RF module
- Ceramic Antenna
Specifications
EP1_RX
- Frequency Range: 2400 MHz to 2500 MHz
- Maximum receive refresh rate: 500Hz
- Minimum receiver refresh rate: 25Hz
- RF Chip: SX1280IMLTRT RF Module
- Weight: 0.42gram(without antenna)
- Antenna: Omnidirectional antenna
- Dimension: 10mm*10mm*3mm
- Firmware Target:aec8ad82
- Firmware Upload: WiFi
- Working voltage: 5v
- Peak gain: 2.23dB
- MCU: ESP8285
- Type: ISM
Firmware
Note: Since the official version of ELRS firmware has not been released yet, currently our PP_RX, EP1/EP2 RX, and ES24TX pre-loaded firmware are all beta versions, and you can upgrade the official firmware when the official target is available.
More details
https://github.com/ExpressLRS/ExpressLRS
Binding procedure:
- Supply power to the PP/EP1/EP2 RX, wait until the LED on the RX is off, immediately turn off the power, and then repeat again the above steps. When the RX is powered on for the third time, the LED light will start to double-flash, which means that the RX enters the binding mode.
- Insert the ES24TX module or other DIY 2.4G ELRS TX to Radio transmitter, and choose External RF mode to CRSF protocol, then you can find the ELRS menu from the Radio systems(Need to copy the ELRS.LUA file to the SD-Card tools first), Enter into ELRS and press [Bind], the LED on the RX module will be getting solid if bind is successful.
- Receiver LED status meanings:
- PP RX: LED solid means bind successful or Connection established; LED double-flash means in bind mode; LED flash slowly means no signal connection from the TX module
- EP1/EP2 RX: LED solid means bind successful or Connection established; LED double-flash means in bind mode; LED flash slowly means no signal connection from the TX module; LED flash fast means in WIFI hotspot mode, you can connect the WIFI of the RX and upgrade the firmware of the RX via visit 10.0.0.1 from the web browser(password: expresslrs)
Includes
- 1x Happymodel ExpressLRS Nano 2.4GHz EP1 RX
- 1x 40mm Omnidirectional antenna
- 1x 90mm Omnidirectional antenna
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
4.3 ★★★★★
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Product Reviews
★★★★★ 5
Surprisingly Effective for Redness & Post-Sun Skin Recovery
This stuff actually works. I’ve been using it after sun exposure, and it genuinely seems to help calm, soothe, and hydrate my skin.
I usually spray it on before applying my hydrating serums and moisturizer, so it’s part of a larger skincare routine, but I definitely feel like this mist plays an important role. My skin feels less irritated, looks less red, and just overall more refreshed afterward.
The spray itself is lightweight and easy to use, with no sticky residue or heavy feeling on the skin. It layers well with other skincare products too, which I appreciate.
Overall, this has become a really nice recovery step in my routine—especially after being outdoors or whenever my skin feels stressed and dehydrated. Sometimes skincare products make very dramatic promises and deliver absolutely nothing but scented disappointment. This one quietly does its job.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Truly refreshing right away
I am someone who gets a red face from even the most slight physical exertion, even when I'm in peak physical shape (I've been this way my entire life), so anything that reduces redness and heat is something I'll pretty much instantly try. I already use several other Coola products (their hair sunscreen is amazing) so this was interesting right away. After going on a brisk walk pushing the stroller (while pregnant by the way), I tried this spray on my face and chest. It was genuinely refreshing immediately! It didn't bother my skin, was a good amount of product in one spray, and didn't have any kind of weird smell. Honestly for $20, I would buy this repeatedly every spring/summer, especially in the Midwest! I'm considering ordering an extra bottle just for my daughter to take with her to summer camp. Pro tip: store in the fridge for even more refreshing-ness!
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Reviewed in the United States on April 17, 2026
★★★★★ 4
Amazing ability to calm red, itchy skin but pricier than alternatives
When I saw this product, I was a bit skeptical. I have extremely dry skin that’s prone to red, itchy spots but it seemed unlikely a misty spray would be anywhere near as beneficial as the creams and ointments I’ve turned to over the years. Since I’ve used other COOLA products and really liked them, I decided to give it a try and I was pleasantly surprised. I tried it on a couple of red patches on my face. There’s an immediate feeling of cooling relief (which leads me to believe this would also be a great solution for a burn), but what I found amazing was the redness decreased significantly and immediately. After a few minutes, I was able to put on makeup, forgoing concealer on those spots. I also tried it on a red, itchy spot on my leg, again calming the itch and decreasing the redness.
Just because it seemed unwise to start using hypochlorous acid, the active ingredient in this spray, knowing nothing about it, I did a bit of online research. Apparently, not only is it considered safe and recommended by dermatologists for eczema like conditions, it also is antibacterial and can be used to keep cuts clean and help them heal. I’m sold on the concept of this spray. My one hesitation is that it seems to be more expensive than other similar options – particularly when you do the math to determine cost per ounce. I am a real fan of the COOLA brand, but given that my skin is such that I’ll probably use this regularly, the cost differential may become prohibitive.
I would highly recommend this product for anyone who wants it on hand for the occasional sunburn or blemish. For those like me who would benefit by using it once or more per day, while still singing its praises as to efficacy, I would have to qualify the recommendation due to price.
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Reviewed in the United States on March 4, 2026
★★★★★ 5
Refreshing, Recovery Mist
I’ve been using this COOLA Recovery+ Face Mist right after running, and it does wonders. After a run, my face usually looks flushed and feels a bit irritated from sweat and heat. A couple sprays of this helps tremendously. It provides an immediate cooling and refreshing feel without irritation. It really helps reduce that post run redness faster and it feels very gentle. It’s super easy to use. You just spray it on and let it dry.
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Reviewed in the United States on April 23, 2026
★★★★★ 5
Actually a very nice product!
Style: Fresh Rose, Style: Fresh Rose
I chose this because it scored almost 100 on Yuka which is hard to find any kind of tinted moisturizer with such a high score so I appreciate all the good ingredients. When I first tried it I wasn’t in love I thought it would have more coverage but after wearing it for a few days I am starting to really love it! It definitely keeps your face hydrated all day and gives it a definite glow! Coverage on a scale of 1-10 I would say it’s at a 2 maybe 3 but because of the hydration the good ingredients and the beautiful glow it gives my face it deserves 5 stars. A little with this product goes a long way. It’s very light don’t feel like I have anything on my face and even my husband noticed a difference, my face just looks better more even toned and glowy I will definitely continue to buy this since I normally don’t wear makeup this is a nice edition for my no makeup days to help improve my face and I don’t have to feel bad wearing it every day because the ingredients are actually good 👍
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Reviewed in the United States on June 22, 2025