The DHT22 is a popular 8-bit temperature and humidity sensor with digital interface that communicates via a single bus line called 1-wire (aka One-Wire). This device has a wide range of applications: it can measure temperature from -40 ºC to 125ºC and air humidity from 0% to 100% RH. The system can be operated using a microcontroller or any development kit, eg Arduino UNO R3. Specification: Parameters - Supply voltage: from 3.3 V to 6 V - Communication: 1-Wire bus - Average current consumption: 0.2 mA Temperature - Measuring range: -40 to 120 ° C - Resolution: 8-bit (0.1 ° C) - Accuracy: ± 0.5 ° C - Response time: average 2 seconds Humidity - Measuring range: 0 - 100% RH - Resolution: 8-bit (± 0.1% RH) - Accuracy ± 2% RH * - Response time: average 2 seconds https://elecena.pl/product/22604357/am2302-dht22-1-wire-humidity-and-temperature-sensor-arduino 2023-02-22 https://elecena.pl/product/22604357/am2302-dht22-1-wire-humidity-and-temperature-sensor-arduino 2025-10-29