{"product_id":"sht40-temperature-humidity-sensor-qwiic","title":"SHT40 Temperature \u0026 Humidity Sensor – STEMMA QT \/ Qwiic","description":"\u003cp\u003eA precise little sensor for knowing how warm and humid it is — on the body, inside a garment, or in the room. The \u003cstrong\u003eSensirion SHT40\u003c\/strong\u003e is a big step up from older sensors like the DHT11 and DHT22: faster, far more accurate, and it uses almost no power.\u003c\/p\u003e\u003cp\u003eBest of all, this board has \u003cstrong\u003etwo Qwiic \/ STEMMA QT connectors\u003c\/strong\u003e, so you can plug it straight into a compatible microcontroller with a cable — \u003cstrong\u003eno soldering needed\u003c\/strong\u003e — and daisy-chain other I2C sensors off the second port. Headers are included too if you prefer a breadboard.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor:\u003c\/strong\u003e Sensirion SHT40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature accuracy:\u003c\/strong\u003e ±0.2 °C (0 to +70 °C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumidity accuracy:\u003c\/strong\u003e ±1.8% RH (10–90% RH)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e I2C, address 0x44\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply voltage:\u003c\/strong\u003e 3–5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectors:\u003c\/strong\u003e 2 × JST SH 4-pin (Qwiic \/ STEMMA QT) plus 0.1\" header\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePin Definitions\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVIN\u003c\/strong\u003e — Power in, 3–5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGND\u003c\/strong\u003e — Ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSCL\u003c\/strong\u003e — I2C clock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSDA\u003c\/strong\u003e — I2C data\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProject Ideas\u003c\/h2\u003e\u003cp\u003eGarments that warn you when you're overheating, a scarf that glows when it's cold out, sweat and comfort studies in performance wear, or a mini weather station you can wear on a bag strap.\u003c\/p\u003e\u003ch2\u003eGood to know\u003c\/h2\u003e\u003cp\u003eMount the sensor where air can reach it. If it's sealed inside thick fabric it will read the temperature of the garment, not the air around you.\u003c\/p\u003e\u003ch2\u003ePair It With\u003c\/h2\u003e\u003cp\u003ePlug it into the \u003ca href=\"\/products\/adafruit-esp32-c3-qt-py-wifi-dev-board-w-stemma-qt-1\"\u003eAdafruit ESP32-C3 QT Py\u003c\/a\u003e or \u003ca href=\"\/products\/adafruit-esp32-s2-qt-py-wifi-dev-board-w-stemma-qt\"\u003eAdafruit ESP32-S2 QT Py\u003c\/a\u003e with a \u003ca href=\"\/products\/stemma-qt-qwiic-jst-sh-4-pin-cable-50mm-long-1\"\u003eSTEMMA QT \/ Qwiic 50mm cable\u003c\/a\u003e, or use the \u003ca href=\"\/products\/stemma-qt-qwiic-jst-sh-4-pin-to-premium-male-headers-cable-150mm-long-1\"\u003eSTEMMA QT to male header cable\u003c\/a\u003e to connect it to any board with header pins. Show your readings on the \u003ca href=\"\/products\/1-28-inch-tft-lcd-display-module-round-240x240-1\"\u003e1.28\" round TFT display\u003c\/a\u003e. Want something simpler? We also stock the \u003ca href=\"\/products\/adafruit-aht20-temperature-humidity-sensor-breakout-board-stemma-qt-qwii-1\"\u003eAdafruit AHT20\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eIn the box\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSHT40 temperature \u0026amp; humidity module × 1\u003c\/li\u003e\n\u003cli\u003eHeader pins × 1 set\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tinker Tailor","offers":[{"title":"Default Title","offer_id":51926734176489,"sku":"TT-SHT40","price":8.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0790\/8006\/3209\/files\/Safc19c6c70444486988ae1ff09c4a09fq.webp?v=1790179579","url":"https:\/\/www.tinkertailor.ca\/products\/sht40-temperature-humidity-sensor-qwiic","provider":"Tinker Tailor","version":"1.0","type":"link"}