Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Sensor Model | LM75BD / LM75AD |
| Interface Type | I2C (Inter-Integrated Circuit) |
| Operating Voltage | 2.7V to 5.5V |
| Temperature Range | -55°C to +125°C |
| Accuracy | ±2°C (typical) |
| Resolution | 9-bit to 12-bit configurable |
| Conversion Time | Max 150ms at 12-bit |
| Package Type | SOIC-8 on Breakout Board |
| Pin Count | 5 Pins (VCC, GND, SDA, SCL, ALERT) |
| Application | Embedded Systems, HVAC, Industrial Monitoring |
Anonymous
Mar 31, 2026
Rating: 5/5
Great for Home Automation
Integrated this with my ESP32 home server. The low power consumption and accurate readings make it ideal for monitoring server room temperatures. Very satisfied.
Anonymous
Mar 29, 2026
Rating: 5/5
Consistent Performance
We ordered ten of these for our student robotics kits. All units worked out of the box with uniform calibration. Excellent value for educational purposes.
Anonymous
Mar 27, 2026
Rating: 4/5
Solid sensor, clear documentation needed
The hardware is excellent, but I had to look up the datasheet online for the register map as the included paper was minimal. Once configured, it reads temperature very quickly.
Anonymous
Mar 26, 2026
Rating: 5/5
Reliable and Compact
Great little sensor board. It fits perfectly into tight spaces in my enclosure. The alert pin feature is very useful for setting over-temperature thresholds without constant polling.
Anonymous
Mar 15, 2026
Rating: 5/5
Perfect for Arduino Projects
This LM75 module works flawlessly with my Arduino Uno. The I2C communication is stable, and the temperature readings are consistent with my calibrated thermometer. Highly recommended for hobbyists.
Anonymous
Mar 11, 2026
Rating: 4/5
Good precision, easy to integrate
Used this for a custom PCB prototype. The high-speed I2C interface performed well up to 400kHz. Only minor issue was the silkscreen labeling being slightly faint, but functionality is top-notch.
Q: What is the default I2C address for this sensor?
A: The default I2C address is 0x48. You can change the address by connecting the A0, A1, and A2 pins to VCC or GND if your specific chip variant supports address selection pins exposed on the board.
Q: How do I configure the resolution of the temperature reading?
A: Resolution is configured via the Configuration Register. You can set it to 9, 10, 11, or 12 bits. Higher resolution increases accuracy but also increases conversion time.
Q: Is the ALERT pin active high or active low?
A: The ALERT pin behavior is configurable in the configuration register. By default, it is often set to active low, but you can program it to be active high depending on your system requirements.
Q: Can this sensor operate at 3.3V logic levels?
A: Absolutely. The LM75 operates from 2.7V to 5.5V, so it is fully compatible with 3.3V microcontrollers like the ESP32 and Raspberry Pi.
Q: Does this module come with pull-up resistors for the I2C lines?
A: Yes, the breakout board includes 4.7kΩ pull-up resistors on both SDA and SCL lines, making it ready to use without external components.
Rubber Speed Bump End Cap Heavy-Duty 1 Pack
$72.46
Front Wiper Arm Assembly for Citroën C-Elysée, Xsara Picasso, Peugeot 307/301
$35.00
Underbite Corrector Case - Portable Magnetic Lanyard Storage Box for Frankel Appliance and TB Palatal Expander
$22.70
Car Tire Stone Removal Tool, Multi-Function Hook for Picking and Extracting Stones from Treads
$6.43
Outdoor Lamp Stand for Camping, Lantern Holder Pole for Street Vending and Night Fishing
$13.89
Waste Removal and Paper Stacking Machine, Automatic Paper Collection and Counting Receiver for Carton Printing Equipment, Carton Factory Machinery
$6,400.00
Sheepskin Baby Rattle - Chewable Traditional Handmade Shaker Bell, Intangible Cultural Heritage Essential for Newborn Care
$57.00
Zhizhi Study Room 'Small Pot Sky' Brush Washer - Traditional Handmade Glass with Lost-Wax Method, Silk Luster, Double-Compartment Water Vessel
$457.00
Zao Boshi Insulated Food Cart - Programmable Banquet Warmer for Buns, Breakfast Items, and Hotel Dry/Wet Dishes
$11,566.00
![Lichuan JK [Blood Oath] - Original Authentic Japanese Dark Style Embroidered Sailor Suit - Spring/Autumn Set](https://www.gosteppe.com/cache/small/product/269363/legacy-main-0b86f0b7795c15ee2c8be0d3.webp)
Lichuan JK [Blood Oath] - Original Authentic Japanese Dark Style Embroidered Sailor Suit - Spring/Autumn Set
$59.00
Sink Storage Rack Stainless Steel No-Drill Kitchen Sponge Steel Wool Cloth Pot Lid Organizer Wall-Mounted Drain Rack
$4.93
Sketch Blending Stump Set for Artists - Detail Highlight and Shadow Smudging Tools with Replacement Tips
$14.80
Softening Agent for Board Arcs Melamine Softener Eco-Friendly Board Paint-Free Board Whole House Customization Arc Softener
$9.30
Car Tire Stone Removal Tool - Hook Picker for Cleaning Pebbles from Vehicle Treads
$3.90
Electrical Box with PLC System and VFD for Fans and Pumps
$2,519.00
Zunjue Watercolor Sketchbook 300g Fabric-Covered Journal – Portable Acrylic Marker Book, 100% Cotton Flip-Style Concertina Drawing Paper
$13.70
French Imported Arches Watercolor Paper, Handmade Cotton Pulp 300g Full/Half/4K/8K/16K/32K Rough/Medium/Fine Grain, 185g Cotton Pulp for Postcards and Watercolor Books
$20.80
![[Official Authentic] Zichao Bear Wanda Cinema Popcorn Acrylic Keychain Plush Doll Cute Toy](https://www.gosteppe.com/cache/small/product/269355/legacy-main-ae40bf0d9a6007e2f30a9130.webp)
[Official Authentic] Zichao Bear Wanda Cinema Popcorn Acrylic Keychain Plush Doll Cute Toy
$25.40
Heidelberg Printing Press Automatic Blanket Wash Cloth - Non-Woven Cleaning Fabric, 500m Roll
$3,185.00
Bucket Pack Natural Wood Colored Pencils Water-Soluble for Kids Coloring and Doodling
$6.65
Chunfei Grocery Store Yunm'an GR02 Gravel Bike - Thru-Axle Disc Brake, Lightweight Touring with Multiple Rack Mounts
$6,444.00
Variable Frequency Drive Power Board ZPOW-591 for ACS880
$2,200.00
Professional Sketching Eraser Kit - Blending Stumps, Sponges, and Paper Tortillons for Highlight & Shadow Correction
$3.90
Weighted Water Bag with Handle, Thickened PV Mesh Gravity Ballast for Banner Stand Fixation (8KG)
$35.10
Ultra-Fine Purification Lint-Free Cloth Cleaning Cloth Lens Wipe High Quality 0730 Water-Absorbing Dust Removal UV Nozzle 100 Sheets
$96.00
Wen Zhengming Small Regular Script Calligraphy Cards: Li Sao Jing, Thousand Character Classic, Qin Fu, Cao Tang Shi Zhi, Qing Jing Jing, Record of the Drunken Pavilion, Red Cliff Ode
$59.00
Zhizhi Manshu Zhao Mengfu Small Regular Script Collection of Ancient Classics (Vol. 1) - Calligraphy Copybook, Brush Writing Cards, Foldable Practice Cards
$49.00
Language of Drums Motion Path Set - Essential Creativity and Rhythm Teaching Material for Drum Kits and Jazz Drums
$59.14
onlycook Sink Drain Basket, Faucet-Mounted Food Residue Separator and Washing Strainer - 1 Pack
$14.10
Heavy-Duty Wiper Arms and Blades for Trucks and Agricultural Vehicles - Universal Replacement Wiper Rubber Strips
$5.50
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
