DHT11 DHT22 (also referenced AM2302) and DHT12 sensors allow temperature and relative humidity measurements to be made accurately and economically. These are very common sensors for which it is very easy to find the library whatever the development environment. Arduino, ESP8266, ESP32, Raspberry Pi, STM32 …
Find all the examples and projects made with ESP Easy here.
Technical comparison of temperature and humidity sensors DHT11, DHT12 and DHT22
| DHT11 | DHT22
(AM2302) |
DHT12 | |
| I2C | ✓ | ||
| PWM output | ✓ | ✓ | |
| Temperature measurement | 0°C ~ +50°C | -40°C ~ +80°C | -20°C ~ +60°C |
| Temperature measurement accuracy | ± 2 ° C | ± 0.5 ° C | ± 0.5 ° C |
| Relative humidity measurement | 20 to 95% | 0 to 100% | 20 to 95% |
| Humidity measurement accuracy | ± 5% | ± 2% | ± 5% |
| Standby current | 60μA | ||
| Supply voltage | 3,3 ~ 5V | 3,3 ~ 5V | 2,7 ~ 5.5v |
DHT11 temperature and humidity sensor
It is the ideal basic sensor for beginners.
ESP-01 module with integrated DHT11
DHT22 temperature and humidity sensor
DHT12 temperature and humidity sensor
Solder sensor, shield for LoLin d1 mini or breakout for Arduino, ESP8266, ESP32, Raspberry Pi, STM32 projects …
M5Stack DHT12 module
ESP Easy compatible sensors and actuators offers
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