Dht11 Temperature And Humidity Sensor
| Operating voltage | 3-5V |
| Humidity | 20%-80%, 5% accuracy; |
| Temperature | 0deg to 50 deg C, +/- 2 deg C accuracy |
| Power supply | DC 3.5-5.5V |
| Sampling period | more than 2 seconds |
| Resolution | 16Bit |
| Accuracy | At 25 deg C +/- 5% RH |
| Temperature Range (Degree Celsius) | At 25 deg C +/- 2 deg C |
| Application | HVAC, dehumidifier, testing and inspection equipment, consumer goods, automotive, automatic control, |
DHT11 is an inexpensive sensor that provides calibrated digital outputs for ambient temperature and relative humidity. It comes in a single row 4-pin package and operates from 3 to 5.5V power supply. It can measure temperature from 0-50 °C with an accuracy of ±2°C and relative humidity ranging from 20-95% with an accuracy of ±5%. It has got its own proprietary 1-wire protocol, and therefore, the communication between the sensor and a microcontroller is not possible through a direct interface with any of its peripherals. The protocol must be implemented in the firmware of the MCU through bit-banging of an I/O pin.
Low-cost temperature and humidity sensor. Requires a single digital I/O pin to read both temperature and humidity values. Details:
- Operating voltage: 3-5V;
- Humidity: 20%-80%, 5% accuracy;