Description Boardoza LM75A Temperature Sensor is a compact digital temperature sensor breakout board designed for precise temperature monitoring, data logging, and thermal protection in embedded systems. Built around the NXP LM75ADP temperature sensor IC, this module provides I2C communication, programmable thresholds, and thermal watchdog capability for reliable system feedback. The Boardoza LM75A temperature sensor supports a wide -55°C to +125°C measurement range and outputs temperature data with 0.125°C resolution. With a default I2C address of 0x48, configurable A0-A2 address pads, 5V input, OS overtemperature output, and a compact 20mm x 20mm board, it is suitable for industrial control, consumer electronics, smart devices, and overtemperature protection systems. Features Digital temperature sensing: uses the NXP LM75ADP IC for accurate temperature monitoring in embedded systems. Wide measurement range: supports -55°C to +125°C temperature measurement for industrial and embedded applications. High resolution output: provides 0.125°C per bit resolution for fine temperature feedback. I2C communication: standard I2C interface with default address 0x48 for easy microcontroller integration. Configurable addressing: A0, A1, and A2 address pads allow up to 8 devices on the same I2C bus. Programmable thresholds: supports high and low alarm limits with interrupt output through the OS pin. Compact breakout board: 20mm x 20mm board size for smart devices, data loggers, and thermal protection projects. Specifications Product Boardoza LM75A Temperature Sensor Sensor IC NXP LM75ADP Function Digital temperature sensor Input Voltage 5V Measurement Range -55°C to +125°C Operating Temperature -55°C to +125°C Interface I2C Default I2C Address 0x48 I2C Address Range 0x48 to 0x4F using A0, A1, A2 Output Resolution 0.125°C per bit Main Pins VCC, SCL, SDA, OS, GND Alarm / Interrupt OS overtemperature shutdown output Board Dimensions 20mm x 20mm Shipping Weight 20g Dimensions Applications Embedded temperature monitoring and thermal feedback systems. Industrial control equipment that needs digital temperature supervision. Consumer electronics and smart devices with overtemperature protection. Data logging projects using I2C temperature sensors. Battery-powered or compact systems that need a small digital temperature sensor breakout board. Product List 1 Boardoza LM75A Temperature Sensor Other Content I2C note: the default address is 0x48 when A0, A1, and A2 are pulled down to GND. Address note: shorting the A0-A2 address pads lets the user choose addresses from 0x48 to 0x4F. Alarm note: the OS pin can be used as an overtemperature shutdown output for interrupt-based protection. Threshold note: programmable high and low limits help build thermal watchdog behavior into the host system. Mechanical note: the official repository provides a STEP file for enclosure and board integration planning. Resources Official GitHub Repository LM75ADP Datasheet LM75ADP STEP File FAQ What is the Boardoza LM75A Temperature Sensor used for? It is used for digital temperature monitoring, thermal protection, data logging, and smart device temperature feedback. Which interface does this temperature sensor use? The Boardoza LM75A Temperature Sensor uses I2C communication. What is the default I2C address? The default I2C address is 0x48 when A0, A1, and A2 are pulled down to GND. Can multiple boards share one I2C bus? Yes. The A0, A1, and A2 address pads allow addresses from 0x48 to 0x4F, supporting up to 8 devices on one I2C bus. What temperature range does it support? The official documentation lists a measurement range of -55°C to +125°C.
