Temperature & Humidity Sensors
73 products
Temperature and humidity sensors are among the most frequently used environmental sensors in electronic projects, providing data for monitoring and control systems. This category offers a wide range of products, from analog soil moisture sensors to industrial SHT series, from digital output DHT11 and DHT22 modules to high-precision BME280 integrated circuits.
Popular Sensor Models and Specifications
When selecting a sensor, consider technical details such as communication protocol (I²C, 1-Wire, analog), operating voltage, measurement range, and accuracy. The table below compares common models:
| Model | Temperature Accuracy | Humidity Accuracy | Supply Voltage | Interface |
|---|---|---|---|---|
| DHT11 | ±2°C | ±5% RH | 3.3 - 5V | 1-Wire (proprietary) |
| DHT22 / AM2302 | ±0.5°C | ±2-5% RH | 3.3 - 6V | 1-Wire (proprietary) |
| BME280 | ±1°C | ±3% RH | 3.3V | I²C/SPI |
| SHT31-D | ±0.3°C | ±2% RH | 2.4 - 5.5V | I²C |
Applications
Temperature and humidity measurement plays a critical role in many fields, from greenhouse automation to home weather stations, from incubators to data center environmental monitoring. When reading with a microcontroller, it is important to adjust the sampling interval to the application's needs and to avoid self-heating caused by excessively frequent readings. Additionally, in high-humidity environments, the sensor's IP rating and condensation risk must be considered.
Integration is straightforward thanks to libraries compatible with platforms like Arduino, ESP32, and STM32. Another point to note is that, for analog sensors, proper filtering should be applied to reduce noise and the conversion resolution should be taken into account.
