{"product_id":"adafruit-sensirion-sht45-precision-temperature-humidity-sensor-stemma-qt-qwiic","title":"Adafruit Sensirion SHT45 Precision Temperature \u0026 Humidity Sensor","description":"\u003cp\u003eSensirion Temperature\/Humidity sensors are some of the finest \u0026amp; highest-accuracy devices you can get. And finally, we have some that have a true I2C interface for easy reading.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSHT45\u003c\/strong\u003e sensor is the fourth generation (started at the SHT10 and worked its way up to the top!). The SHT45 has an excellent ±1.0% typical relative humidity accuracy from 25 to 75% and ±0.1°C typical accuracy from 0 to 75 °C.\u003c\/p\u003e\n\u003cp\u003eUnlike some earlier SHT sensors, this sensor has a true I2C interface for easy interfacing with only two wires (plus power and ground!). Thanks to the voltage regulator and level shifting circuitry Adafruit have included on the breakout it is also is 3V or 5V compliant, so you can power and communicate with it using any microcontroller or microcomputer.\u003c\/p\u003e\n\u003cp\u003eSuch a lovely chip - so adafruit spun up a breakout board with the SHT45 and some supporting circuitry such as pullup resistors and capacitors. To make things even easier, they've included \u003ca href=\"\/en-eu\/collections\/qwiic\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSparkFun Qwiic\u003c\/a\u003e compatible \u003ca href=\"\/en-eu\/collections\/stemma-qt\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSTEMMA QT\u003c\/a\u003e connectors for the I2C bus so you don't even need to solder! QT Cable is not included, \u003ca href=\"\/en-eu\/products\/jst-sh-cable-qwiic-stemma-qt-compatible\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ebut we have a variety in the shop.\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eIf you prefer working on a breadboard, each order comes with one fully assembled and tested PCB breakout and a small piece of header. You'll need to solder the header onto the PCB, but it's fairly easy and takes only a few minutes even for a beginner.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/learn.adafruit.com\/adafruit-sht40-temperature-humidity-sensor\/overview\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eAdafruit have written both Arduino and CircuitPython\/Python library code for this chip, so you can use it with just about any microcontroller or single-board computer like Raspberry Pi.\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSHT45-AD1B-R2 specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAccuracy Specification: ΔRH = ±1.0 %RH, ΔT = ±0.1 °C\u003c\/li\u003e\n\u003cli\u003eBreakout board Vdd\/logic: 3.3V to 5V\u003c\/li\u003e\n\u003cli\u003eAvg. current: 0.4 µA, Idle current: 80 nA (not including on-board regulator quiescent)\u003c\/li\u003e\n\u003cli\u003eI2C FM+, CRC checksum, default I2C addr 0x44\u003c\/li\u003e\n\u003cli\u003eOperating range: 0 … 100 %RH, −40…125 °C\u003c\/li\u003e\n\u003cli\u003eFully functional in condensing environment\u003c\/li\u003e\n\u003cli\u003ePower heater, true NIST-traceability\u003c\/li\u003e\n\u003cli\u003eJEDEC JESD47 qualification\u003c\/li\u003e\n\u003cli\u003eSensor-specific calibration certificate acc. to ISO 17025 : 2017, 3-point temp. calibration\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sensirion.com\/products\/catalog\/SHT45\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMore information at Sensirion!\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProduct Dimensions: 25.5mm x 17.7mm x 4.8mm \/ 1.0\" x 0.7\" x 0.2\"\u003c\/p\u003e\n\u003cp\u003eProduct Weight: 1.7g \/ 0.1oz\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn-shop.adafruit.com\/product-files\/5665\/5665_Datasheet_SHT4x.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSHT4x Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":40478018011219,"sku":"ADA5665","price":12.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/products\/5665-00.jpg?v=1672926821","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/adafruit-sensirion-sht45-precision-temperature-humidity-sensor-stemma-qt-qwiic","provider":"Pimoroni Ltd","version":"1.0","type":"link"}