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Description
BDD CJMCU5837 WATER PRESSU SENSOCJMCU 5837 MS5837 02BA01 Water Pressure Sensor Measurement Module I2C, 3 5V, 0 TO 30 Bar Water Pressure Sensor Measurement Module Overview This pressure sensor uses the MS5837 30BA which is a new generation of high resolution pressure sensors with I2C bus interface for depth measurement systems with a water depth resolution of 2 mm. The sensor module includes a high linearity pressure sensor and an ultra low power 24 bit ADC with internal factory
CJMCU-5837 MS5837-02BA01 Water Pressure Sensor Measurement Module I2C, 3-5V, 0 TO 30 Bar
Water Pressure Sensor Measurement Module
Overview
This pressure sensor uses the MS5837-30BA which is a new generation of high resolution pressure sensors with I2C bus interface for depth measurement systems with a water depth resolution of 2 mm. The sensor module includes a high linearity pressure sensor and an ultra-low power 24 bit ΔΣ ADC with internal factory calibrated coefficients. It provides a precise digital 24 Bit pressure and temperature value and different operation modes that allow the user to optimize for conversion speed and current consumption. A high resolution temperature output allows the implementation in depth measurement systems and thermometer function without any additional sensor. The MS5837-30BA can be interfaced to virtually any microcontroller. The communication protocol is simple, without the need of programming internal registers in the device. The gel protection and antimagnetic stainless steel cap make the module water resistant. This new sensor module generation is based on leading MEMS technology and latest benefits from MEAS Switzerland proven experience and know-how in high volume manufacturing, which has been widely used for over a decade.
Features
- High-Resolution Depth Tracking: Delivers an RMS resolution of 0.2 mbar, allowing microcontrollers to resolve water depth changes down to 2 mm.
- Deep Water Capability: Measures absolute pressure from 0 to 30 bar, enabling deployment at depths up to 300 metres underwater.
- 24-bit Digital Output: Features an on-board ∆∑ ADC that feeds factory-calibrated, uncompensated 24-bit pressure and temperature data directly over I2C
- Ruggedized and Waterproof: Protected by an anti-magnetic stainless steel cap and a specialized dielectric gel fill to shield the internal MEMS elements from water and moisture.
Specifications
- Power: 3-5V
- Communication: I2C
- High-resolution module 0.2 mbar
- Fast conversion down to 0.5 ms
- Low power, 0.6 µA (standby < 0.1 µA at 25°C)
- Operating range: 0 to 30 bar, -20 to +85°C
Operational Notes
- Calibration Data: Every individual module contains 6 factory-calibrated coefficients stored inside its internal PROM. Your microcontroller software must pull these coefficients during initialization to accurately calculate compensated temperature and depth values.
- Submersion Constraints: While water-resistant, it is highly recommended to design an external mechanical enclosure with an O-ring (typically 1.8mm x 0.8mm) to safeguard the electrical traces on the CJMCU breakout board itself.
- Drying Cycles:, Gel-covered pressure sensors should ideally be allowed to dry periodically out of water to prevent long-term saturation drift.
These sensors use gel-covered sensing elements that must be dried for at least 2 hours each day to maintain accuracy. Long-term submersion may damage the sensor.
Additional Information
| Device | Sensor Measurement Module |
Shipping Notes
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Exchange/Return Notes
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4.7 ★★★★★
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Product Reviews
★★★★★ 1
Smells terrible
Color: Army Green
I bought this in green. Love the bag and the color. But the smell!! It is horrible.
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Good hobo bag
Color: Grey
I love a good hobo bag for its laid-back style and functionality. It’s spacious without feeling bulky, and the slouchy design gives it that effortless, everyday vibe. There was no odor,material is a good thickness, not sure on durability since I just started to use it. The bag was bigger than I expected.
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Reviewed in the United States on April 22, 2026
★★★★★ 2
Strong stinky odor
Color: Army Green
I cannot share the stink of the purse. It fills small rooms with its odor. The bag is okay, but needs to be washed….
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Perfect size!
I love a good large hobo bag! This one has a great slouch to it and you can fit a ton in it! I've had everything from my iPad and a makeup bag plus yoga clothes and still had room for a water bottle too! The fabric is gorgeous and although I'm not always keen on logo-prints, I like that the bag's print is so understated and discreet.
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Large, non zipping, sturdy, stylish
large cream MK purse
I’m giving my thoughts on this purse that I got recently and here is what I liked.
Size-
This is a large purse. It has one large main compartment that is secured with a gold, snapping clasp. It doesn’t come apart unless you push both sides of this clasp.
1 pocket inside for my phone or whatever I need quick access to.
2 vertical outside pockets with working zipper. The pockets run the height of the purse and are narrow. I can get a skinny water bottle in there.
Not Adjustable
This comes with a short shoulder strap. The strap is not removable. There are two D-rings (H-ring) on each side that hold the strap so if I want I can add a long strap. Really though, this is not the kind of purse that would look good with a long strap. There is plenty of room to put the purse on your shoulder and it feels very secure.
Look and feel
It looks and feels like leather to me but it says PU which is not leather. I’m fine with that. It is firm in a sturdy strong way, having structure and can stand up on a table. The material is the kind you can wipe with a damp cloth. This purse is not going to get stained unless it’s something like ink that stains practically everything. Mine has monogram NK but if you don’t look real close, I think it looks a lot like a designer purse with the monogram m and k.
Function
I tend to change purses a lot so I keep things in smaller bags. For example, I have small bags for makeup, medical etc and they fit neatly in here. There is not a designated place for cards and cash so you’d need a wallet or you could put it in the inside pocket. I use a medium sized wallet. My iPhone 14 with case fits in the inside pocket and hasn’t fallen out yet. The 2 outside zipper pockets are large enough to hold my phone and my wallet, one on each side.
I can’t think of anything I’d add or change right now. This is a very nice bag to carry everyday. The holding capacity is similar to the neverfull.
I’m happy I got this and can recommend it to you. It’s nice looking, makes good use of space, and for me, was a good deal.
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Reviewed in the United States on March 15, 2026