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Description
HM-10 BLE Bluetooth 4.0 CC2540 CC2541 Serial Wireless Module ArduinoHM 10 BLE Bluetooth 4. 0 CC2540 CC2541 Serial Wireless Module Arduino Feature: Internal with logic level conversion circuit. No need external 5V level to turn into a 3. 3V level The power input port with anti anti circuit. To avoid accidental power plug reversed, leading to the module burned HM 10, HM 11 series Bluetooth module using TI CC2540 chip, configuration 256Kb space, support AT commands, you can change the role (master and slave mode) and the
HM-10 BLE Bluetooth 4.0 CC2540 CC2541 Serial Wireless Module Arduino
Feature:
Internal with logic level conversion circuit. No need external 5V level to turn into a 3.3V level
The power input port with anti-anti-circuit. To avoid accidental power plug reversed, leading to the module burned
HM-10, HM-11 series Bluetooth module using TI CC2540 chip, configuration 256Kb space, support
AT commands, you can change the role (master and slave mode) and the baud rate, the device name,
Pairing password and other parameters, convenient and flexible.
Parameters:
Bluetooth protocol: Bluetooth Specification V4.0 BLE
USB Protocol: USB V2.0
Operating Frequency: 2.4GHz ISM band
Modulation: GFSK (Gaussian Frequency Shift Keying)
Transmit power: ≤4dBm
Sensitivity: ≤-84dBm at 0.1% BER
Transfer rate: Asynchronous: 6 kbps, Synchronous: 6 kbps
Security Features: Authentication and encryption
Support Services: Central & Peripheral UUID FFE0, FFE1
Power supply: + 3.3VDC 50mA
Working temperature: -5 ~ +65 Centigrade
Dimensions: 27 x 13 x 2.2 mm.
Note:
Support Apple IOS5 /IOS6 system, please download the files before you buy it.
BT V4 module interfaces and microcontroller connection requires only four lines: 5V (VCC) GND TXD RXD
Application areas:
Industrial remote control, remote sensing
POS system, bluetooth keyboard, mouse, game controllers
Automobile testing equipment
Portable, battery power of medical equipment
Automated data collection
Bluetooth remote control toy
The wireless LED display system
Bluetooth printer
Intelligent household, industrial control
Package content: :
1 x HM-10 Bluetooth 4.0 Module
Raspberry Pi is a Trademark of the Raspberry Pi Foundation
Product ID: EP00269
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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 26 reviews
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Product Reviews
★★★★★ 5
Classic wardrobe basic
Size: X-Large, Color: Black, Size: X-Large, Color: Black
Great fit and a nice lightweight fabric. The elastic in the back helps it fit a woman's curves just fine, and because these are men's shorts, they have nice deep pockets in the front. A little longer than I thought they would be, but that just means they're a modest basic look. On the whole, a good value for the money, reasonable quality.
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Reviewed in the United States on March 29, 2025
★★★★★ 5
solid old style docs construction
i am a medium to wide-ish 7.5 in women's, that typically wears an 8 for room. these fit like a wider, roomy 8.5 women's. that is fine because i intend to wear them with thicker socks and for long walks.they are immediately comfortable, and do not feel like they will have the typical brutal break in period. very stable and fitted around the ankle, yet not impossible to pull on and off.
they are so handsome, and meet my expectations.
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Reviewed in the United States on November 11, 2025
★★★★★ 5
Get it!!
Size: 6 Women/5 Men, Color: Black Blizzard Wp
This shoe has been a dream for me. I live in an area that gets snow so having the inner lining is great. My feet haven't been cold and I’ve not felt the need to multi-layer my socks, like with other shoes. Unlike most doc marts, I did nor have to break in this shoe, its been very comfy from the get. Material is really durable and has lasted me a long time. This is a great shoe, especially for how affordable it is.
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Reviewed in the United States on December 31, 2025
★★★★★ 5
Authentic Docs for great price!
The boots I purchased were Chelsea 2976 in Nappa leather (not the brown Crazy Horse, but the Black; such nice and soft leather!) and unisex size men's 7/women's 8/EU 39 (I'm normally a women's US 9/EU 40, but that's what fit best--see notes on sizing below).
Considering the price, I was a little skeptical that these were genuinely Dr. Marten's, so I ended up bring them into a store to verify before wearing them--and multiple salespeople, who had worked for the company for 7+ years, said they looked like the real deal to them, which is amazing for the price (I got them when they were $99 online, but $160 in store; may have been a sale...?).
Before ordering, I also visited the store to get the right sizing--Dr. Marten's doesn't sell my normal size in the US (EU 40), so I needed help figuring out what to buy. In the end that was either a women's EU 41 or a unisex 39. Dr. Marten's women's sizes are cut more narrow, so if purchasing women's, I needed a longer shoe to give my toes more space (EU 41, which they say is a women's US 9 but on many shoes EU 41 is a US 9.5 or even US 10). Unisex sizes are wider, so I was fine with a shorter length (EU 39). In the end, the only real difference between the women's sizing and men's sizing on the Chelsea boot was at the ankle; for some reason, the women's 41 had more of a gap at the ankle and I worried that might make it rub/blister more, so I went with unisex sizing. It might also depend on the boot, so I'd say go to the store for sizing before purchasing online.
Once I got them & verified their authenticity, I got a but of things to help with weatherizing them and breaking them in (Dr. Marten's has a great kit! And, double thick socks). I did get a bad blister wearing them too long & uphill on the first day (and I had to get used to their weight; I don't have many heavier shoes). But, I used Compeed patches for the blister (should have put them on to prevent, but it was fine once they were on) and after a week of wearing them a little bit at a time, they are now super comfortable and I love them! Highly recommend!
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Reviewed in the United States on February 19, 2024
★★★★★ 5
Function and style
Size: 11 Women/10 Men, Color: Black Blizzard Wp
Ideal boot for the winter, snow, mud, etc. Protect your feet beautifully, stylishly.
Tip: Wear with two socks to help break in for the first couple weeks.
If you are a half size, round up.
This is the model without laces, makes for easy slip on / slip off for those pesky people who insist on having you take off your shoes at their house! Ha ha, you know who you are.
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Reviewed in the United States on April 13, 2026