The Barometric Pressure Unit is a barometer unit that uses a QMP6988 barometric pressure sensor to measure atmospheric pressure and altitude estimation, with a relative accuracy of ±0.039hPa (±0.12hPa, equivalent to ±1m height difference), a wide measurement range, and an integrated temperature sensor inside the chip. Features * Built-in temperature and pressure sensors * High precision (pressure accuracy: ±0.039hPa; Temperature accuracy: 0.0002°C) * Low current consumption: 21.4uA * Development platform: Arduino, UIFlow (Blockly, Python) Specifications Resources Parameters Sensor QMP6988 LDO HT7533 Operating Pressure Range 30kPa to 110kPa Relative Pressure Accuracy ±3.9 Pressure Resolution Temperature Resolution Temperature Resolution 0.0002°C Temperature measurement range -40-80°C I2C Address 0x56 voltage support 5v Product Size 24mm × 24mm ×8.1mm Package Size 136mm × 92mm × 13mm Product Weight 3.3g Package Weight 6.9g Resources * Product Wiki Package contents * 1x Barometric Pressure Unit (QMP6988) * 1x Grove Cable (5cm) https://elecena.pl/product/22728223/m5stack-barometric-pressure-2-unit-qmp6988 2023-03-07 https://elecena.pl/product/22728223/m5stack-barometric-pressure-2-unit-qmp6988 2023-12-27 https://elecena.pl/product/22728223/m5stack-barometric-pressure-2-unit-qmp6988 2024-09-18 https://elecena.pl/product/22728223/m5stack-barometric-pressure-2-unit-qmp6988 2024-11-29 https://elecena.pl/product/22728223/m5stack-barometric-pressure-2-unit-qmp6988 2024-11-30 https://elecena.pl/product/22728223/m5stack-barometric-pressure-2-unit-qmp6988 2025-04-29 https://elecena.pl/product/22728223/m5stack-barometric-pressure-2-unit-qmp6988 2025-08-06 https://elecena.pl/product/22728223/m5stack-barometric-pressure-2-unit-qmp6988 2025-11-28 https://elecena.pl/product/22728223/m5stack-barometric-pressure-2-unit-qmp6988 2025-11-29