Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Interface Protocol	I2C (Inter-Integrated Circuit)
Operating Voltage	2.7V to 5.5V
Temperature Range	-55°C to +125°C
Accuracy	±2°C (typical) from -25°C to +100°C
Resolution	9-bit to 12-bit configurable
Conversion Time	Max 35ms at 12-bit resolution
Address Pins	3 Address Select Pins (A0, A1, A2)
Package Type	SOIC-8 on Breakout Board
Dimensions	14mm x 10mm x 3mm
Application	Industrial control, HVAC, Battery management

6 reviews

Anonymous

Mar 24, 2026

Rating: 5/5

Perfect for Arduino projects

This LM75 module worked straight out of the box with my Arduino Uno. The I2C library examples made integration seamless. Readings are stable and match my reference thermometer closely.

Anonymous

Mar 22, 2026

Rating: 5/5

Consistent readings over time

Been running this sensor in a greenhouse setup for three months now. No drift detected, and it handles humidity well inside the enclosure. Highly recommended for long-term logging.

Anonymous

Mar 21, 2026

Rating: 5/5

Reliable and fast

Bought five of these for a classroom project. All units performed consistently. The high-speed I2C interface handles rapid polling without lag. Great value for the price.

Anonymous

Mar 21, 2026

Rating: 4/5

Easy to use for beginners

As someone new to I2C sensors, this was very forgiving. The wiring is simple (just 4 pins), and online tutorials specific to the LM75 are abundant. Works great with Raspberry Pi too.

Anonymous

Mar 05, 2026

Rating: 4/5

Good precision, clear documentation

Solid sensor for embedded systems. The 12-bit resolution is sufficient for my environmental monitoring station. Only minor issue was the silkscreen labeling being slightly small, but the datasheet helped.

Anonymous

Mar 01, 2026

Rating: 5/5

Compact and efficient

The breakout board design saves a lot of time compared to soldering the SOIC chip manually. Power consumption is low, which is critical for my battery-powered robot.

5 FAQ

Q: Does this come with header pins pre-soldered?

A: The standard package includes the breakout board with unsoldered header pins included in the bag, allowing you to choose between straight or right-angle mounting. Pre-soldered options may be available upon request.

Q: How do I change the I2C address?

A: The module has three address select pins (A0, A1, A2). By connecting these pins to either VCC or GND, you can configure up to 8 different I2C addresses. Please refer to the pinout diagram in the product manual.

Q: What is the maximum cable length for the I2C connection?

A: For reliable communication, we recommend keeping I2C cable lengths under 30cm. For longer distances, consider using an I2C extender or buffer chip to maintain signal integrity.

Q: Can this module operate at 3.3V logic levels?

A: Yes, the LM75 module supports an operating voltage range of 2.7V to 5.5V, making it fully compatible with both 3.3V and 5V microcontrollers.

Q: Is the sensor waterproof?

A: No, the bare breakout board is not waterproof. If you plan to use it in wet or humid environments, please enclose it in a suitable protective housing.

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