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- USA
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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10
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Description
Waveshare ESP32-S3 LoRa Development Board With LR1121 3rd-Gen RF Chip, HF Version, LF Version, HF Kit, LF Kit1. Equipped with the Xtensa 32 bit LX7 dual core processor, with a main frequency up to 240MHz, delivering robust performance; supports 2. 4GHz Wi Fi (802. 11 b g n) and Bluetooth 5 (LE), meeting diverse wireless connectivity needs 2. Built in 512KB SRAM, 384KB ROM, stacked 4MB Flash, and 2MB PSRAM, offering abundant resources 3. Adopts stamp hole design for enhanced integration, facilitating independent baseboard design 4. Rich peripheral interfaces
1. Equipped with the Xtensa 32-bit LX7 dual-core processor, with a main frequency up to 240MHz, delivering robust performance; supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE), meeting diverse wireless connectivity needs
2. Built-in 512KB SRAM, 384KB ROM, stacked 4MB Flash, and 2MB PSRAM, offering abundant resources
3. Adopts stamp hole design for enhanced integration, facilitating independent baseboard design
4. Rich peripheral interfaces including 4 × SPI, 2 × I2C, 3 × UART, 2 × I2S, and 2 × ADC
5. Utilizes LR1121, the third-generation low-power LoRa transceiver from Semtech's LR11xx series
6. Supports Sub-GHz (150MHz to 960MHz), S-band (2.0GHz to 2.1GHz), and 2.4GHz ISM frequency bands
7. Connects to cloud platforms via LoRa or LoRaWAN protocols through gateways to build low-power wide-area networks
8. Supports LoRa, (G)FSK, and LR-FHSS modulation, compatible with SX126X/SX127X frequency bands for seamless product upgrades
9. Integrated AES-128 encryption engine for enhanced data security; onboard TCXO crystal ensures frequency stability under high/low-temperature conditions
10. Suitable for IoT applications including industrial telemetry, smart homes, environmental monitoring, and remote data acquisition
11. Includes C language sample programs and user manuals for streamlined development and rapid deployment
12. Operating frequency bands: LF: 410MHz to 510MHz; HF: 850MHz to 930MHz
Specification:
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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
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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
4.0 ★★★★★
Based on 449 reviews
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Product Reviews
★★★★★ 5
Upgrade from our last one, nice box, easy to read and adjust. Standard plug
Color: 301 Black, Color: 301 Black
One of our old coffee mug warmers finally died and we were looking for a replacement - this is way better than the old one. It comes in a nice printed box - so great for a gift. Standard AC plug and really easy to see button on front. This one shows the temperature and that's handy. It's just the right size for a good sized coffee mug and keeps it warm for hours - if the coffee lasts that long. It's easy to see that it's on so I can turn it off, but it also has auto off if you forget. I'm not really sure what the silicon topper is for, but it sure does look nice. Easy to clean when turned off and I have to say it's pretty professional looking.
It's a 30 watt model so it draws enough energy to keep that coffee warm and can heat up to 180 - that's too hot for my use but I'm sure you can warm something else with it.
Overall: A huge upgrade from our last one. Easier to read, use and clean.
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Reviewed in the United States on November 27, 2025
★★★★★ 4
Good mug warmer
Color: 301 Black
I like this mug warmer a lot. You can choose your temp and it keeps my tea very hot. I also like the auto shut off so I don't have the panic of "did I turn it off? My two minor complaints: 1. The rubber pad that comes with it doesn't stay in place and gets very hot. I just don't use it. 2. The controls are very sensitive. There are so many times that I pick up my mug and I change the temp or I change the timer because my finger brushed up against it. But, otherwise, it's a good value for the money.
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Reviewed in the United States on March 18, 2026
★★★★★ 5
Excellent!
Color: 301 Black, Color: 301 Black
I love the square base, it means both large or small mugs fit with ease. And the build quality is good. It doesnt feel flimsy or lightweight.
The touch buttons are easy and reactive, and the little screen is bright and easy to read.
There are 6 heat settings ranging from 130-180°f, and twelve auto shut-off options, from 1 hour up to 12 hours!
I picked this one both for the square, spacious base, and the fact that it goes up to 180°f. So many of the other options stuck to the 130-150 range, which I find just doesn't keep liquids warm at all. This one keeps them pretty warm - or warm enough.
The cord is also longer than others I've had, I don't know the exact length (it's out of emeeach down the side of my desk at the moment lol) but I like that it's longer if I need to be in the future.
It's not as cheap as some others ($19.99) but well worth the price!
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Reviewed in the United States on January 31, 2026
★★★★★ 5
Better than every other product I’ve used.
Color: 301 Black
I love this product - adjustable temperature control. Keeps my coffee or tea at the right temperatures.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
I'll probably be buying another one for my husband.
Color: 301 Yellow
This warmer works very well. You can remove the silicone mat to accommodate larger cups if, like me, you like to use larges mugs. It has multiple temperatures that come in handy as you get to the bottom of your cup and want to reduce the temperature so the last few of sips aren't too hot.
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Reviewed in the United States on May 23, 2026
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