{"title":"MPL3115A2 - I2C Barometric Pressure/Altitude/Temperature Sensor","handle":"mpl3115a2-i2c-barometric-pressure-altitude-temperature-sensor","url":"/products/mpl3115a2-i2c-barometric-pressure-altitude-temperature-sensor","description":"The MPL3115A2 is a precision barometric pressure, altitude, and temperature sensor from NXP (formerly Freescale) that communicates over I2C. With 1.5 Pa resolution, it can resolve altitude changes as small as 0.3 m and includes a built-in altimeter calculation — no external calibration or manual computation required.\n\nThis breakout includes an onboard 3 V regulator and logic level shifting, so it works directly with 5 V microcontrollers like Arduino as well as 3.3 V boards. The sensor also features interrupt outputs for ultra-low-power applications, and a built-in temperature sensor with ±1 °C typical accuracy.\n\nKey Features\n\n\nBarometric Pressure – 1.5 Pa resolution\n\nBuilt-In Altimeter – Direct altitude output, 0.3 m resolution\n\nTemperature Sensor – ±1 °C typical accuracy (±3 °C max)\n\nI2C Interface – Simple two-wire connection\n\nInterrupt Outputs – For low-power event-driven operation\n\nLevel Shifted – Onboard 3 V regulator, compatible with 3.3 V and 5 V logic\n\n\nSpecifications\n\n\nSensor: NXP MPL3115A2\n\nPressure Resolution: 1.5 Pa\n\nAltitude Resolution: 0.3 m\n\nTemperature Accuracy: ±1 °C typical, ±3 °C max\n\nOperating Voltage: 2–3.6 V (breakout accepts 3.3–5 V)\n\nInterface: I2C\n\n\nIdeal For\n\nWeather stations and barometric monitoring\nAltitude measurement and GPS augmentation\nIndoor navigation and floor detection\nLow-power environmental sensing\n\n\nPackage Contents\n\n1× MPL3115A2 breakout board\n\n\nResources\n\nArduino Library (GitHub)\nAdafruit Unified Sensor Guide\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":12908,"title":"Default Title","sku":"AF-1893","price":20.82,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":57,"option1":"Default Title"}]}