{"title":"SparkFun Humidity and Temperature Sensor Breakout - Si7021","handle":"sparkfun-humidity-and-temperature-sensor-breakout-si7021","url":"/products/sparkfun-humidity-and-temperature-sensor-breakout-si7021","description":"A low-cost, highly accurate digital humidity and temperature sensor breakout board based on the Silicon Labs Si7021. Communicates over I²C with just two data lines, providing relative humidity and precise temperature readings for environmental monitoring projects.\n\nThe breakout includes built-in 4.7 kΩ pull-up resistors for I²C. If connecting multiple I²C devices on the same bus, you may want to disable these resistors to avoid conflicts.\n\nSpecifications\n\n\nSensor – Silicon Labs Si7021\n\nMeasurements – Relative humidity and temperature\n\nInterface – I²C\n\nPull-Up Resistors – 4.7 kΩ (built-in, can be disabled)\n\nConnections – VCC, GND, SDA, SCL\n\nBoard Dimensions – 15 × 15 mm (0.6″ × 0.6″)\n\n\nKey Features\n\n\nHigh Accuracy – Precise humidity and temperature readings\n\nSimple I²C Interface – Only 4 pins to connect (VCC, GND, SDA, SCL)\n\nBuilt-In Pull-Ups – Ready to use out of the box\n\nLow Power – Ideal for battery-powered and data-logging applications\n\n\nIdeal For\n\nWeather stations\nEnvironmental data logging\nHumidor and climate control systems\nIoT sensor networks\n\n\nPackage Contents\n\n1× SparkFun Si7021 Humidity and Temperature Sensor Breakout\n\n\nResources\n\nSi7021 Datasheet (PDF)\nHookup Guide (SparkFun)\nGitHub – Design Files and Example Code\nSchematic (PDF)\nEagle Design Files (ZIP)\n","vendor":"SparkFun","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":11342,"title":"Default Title","sku":"SF-SEN-13763","price":20.94,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":2,"option1":"Default Title"}]}