The DHT11 Temperature and Humidity Sensor Module is the most common beginner sensor for measuring room temperature and humidity. It gives a digital output on a single pin and works with the DHT library on Arduino, ESP32 and NodeMCU.
| Sensor | DHT11 |
|---|---|
| Temperature | 0 – 50 °C (±2 °C) |
| Humidity | 20 – 90% RH (±5%) |
| Supply voltage | 3.3V – 5V |
| Output | Single-wire digital |
| Sampling rate | 1 Hz (one reading per second) |
What is the operating voltage?
3.3V – 5V.
DHT11 or DHT22?
DHT11 is fine for room readings; for more accuracy or below 0 °C choose DHT22.
Can I buy the DHT11 Temperature and Humidity Sensor Module in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
