{"product_id":"aht25-temperature-humidity-sensor-i-c-digital-output","title":"AHT25 Temperature Humidity Sensor — I²C Digital Output","description":"\u003ch1\u003eAHT25 Integrated Temperature and Humidity Sensor — High Accuracy I²C Digital Output\u003c\/h1\u003e\u003cp\u003eThe AHT25 is a compact, calibrated digital temperature and humidity sensor with an I²C interface. It delivers accurate environmental data for IoT, weather stations, and automation projects. Its fully molded package and low power consumption make it reliable for battery-powered applications.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e1.8 V to 3.6 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e0.25 µA (sleep), 0.98 mA (measuring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Range \/ Accuracy\u003c\/td\u003e\n\u003ctd\u003e0–100% RH; ±2% RH (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range \/ Accuracy\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C; ±0.3°C (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eI²C, up to 1 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Dimensions\u003c\/td\u003e\n\u003ctd\u003e3.0 mm × 3.0 mm × 1.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-indoor-weather-station\"\u003eA local weather station that logs data to an SD card or cloud dashboard.\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-pi-4-automated-greenhouse-controller\"\u003eAn automated greenhouse controller that activates fans or misters based on humidity.\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eA room climate monitor with an e‑paper display for egg incubators.\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-esp32-mqtt-home-sensor-network\"\u003eA smart home sensor node that reports conditions via MQTT over Wi‑Fi.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThe sensor operates on 3.3 V logic, making it a direct fit for Arduino boards (Uno, Nano) with a level shifter, and fully compatible with ESP32, ESP8266, Raspberry Pi Pico, and standard Raspberry Pi single‑board computers. The I²C address is 0x38 (backward‑compatible).\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect SDA and SCL to the corresponding I²C pins on your microcontroller. Add 4.7 kΩ pull‑up resistors to both lines if the board lacks internal pull‑ups. The supply pin must not exceed 3.6 V; typical 3.3 V operation is recommended.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes. It works with any Arduino board running at 3.3 V, such as the Arduino Uno or Nano with an external level shifter. Use the Adafruit AHTx0 library for easy integration.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use it outdoors without a protective case?\u003c\/summary\u003e\u003cp\u003eThe sensor is not waterproof. For outdoor use, install it inside a weather shield that allows air flow but blocks direct rain and dust.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat accuracy can I expect compared to a DHT22?\u003c\/summary\u003e\u003cp\u003eThe AHT25 offers tighter accuracy (±0.3°C, ±2% RH) than a typical DHT22 (±0.5°C, ±2-5% RH). It also has a faster response time and lower power draw.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444953964909,"sku":"CDN-0236","price":130.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/images.jpg?v=1781523411","url":"https:\/\/compoden.com\/products\/aht25-temperature-humidity-sensor-i-c-digital-output","provider":"Compoden","version":"1.0","type":"link"}