Temperature & Humidity Sensors

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Temperature & Humidity Sensors — DHT11, DHT22, DS18B20, AM2302 Temperature and humidity sensors are among the most commonly used components in Arduino and IoT projects — from weather stations and smart home thermostats to industrial monitoring and cold chain logging. This collection covers the full range of digital temperature and humidity sensors compatible with Arduino, ESP32, ESP8266, and Raspberry Pi. DHT11 — Entry-Level Temperature & Humidity Temperature: 0–50°C (±2°C accuracy) | Humidity: 20–90% RH (±5% accuracy) Single-wire digital output, 1Hz sampling rate Best for: beginner projects, indoor monitoring where high precision is not required DHT22 / AM2302 — High-Precision Temperature & Humidity Temperature: -40–80°C (±0.5°C accuracy) | Humidity: 0–100% RH (±2–5% accuracy) Single-wire digital output, 0.5Hz sampling rate Best for: weather stations, HVAC monitoring, greenhouse control DS18B20 — Waterproof Temperature Probe Temperature: -55–85°C (±0.5°C accuracy), 1-Wire protocol Stainless steel waterproof probe — for liquid temperature measurement Multiple sensors on a single wire (unique 64-bit address per sensor) Best for: aquarium, pool, soil, and pipe temperature monitoring ESP8266 + DS18B20 / DHT22 Modules WiFi-connected temperature sensor — send readings directly to MQTT, Home Assistant, or cloud No Arduino required — standalone IoT temperature node All sensors are in stock and compatible with Arduino IDE, MicroPython, and ESPHome.