The Aosong DHT11 sensor manual provides specifications, wiring, communication protocol and usage guidelines for the digital temperature and humidity sensor.
The DHT11 is a calibrated digital temperature and humidity sensor featuring a resistive humidity element and an NTC temperature element connected to an 8‑bit microcontroller. It is suited for HVAC, dehumidifiers, data loggers, weather stations, consumer electronics and many other applications.
The manual covers product specifications, typical circuit connections, single‑wire serial communication, data timing, example data frames, wiring recommendations, environmental handling, safety warnings and warranty information. This manual is written in Chinese.
| Relative humidity resolution | 16 Bit |
|---|---|
| Temperature resolution | 16 Bit |
| Supply voltage | 3.5 V – 5.5 V DC |
| Supply current (measurement) | 0.3 mA |
The sensor operates from 3.5 V to 5.5 V DC.
A total of 40 bits are sent: 8 bits humidity integer, 8 bits humidity decimal, 8 bits temperature integer, 8 bits temperature decimal, and 8 bits checksum.
A 5.1 kΩ pull‑up resistor should be used for connections under 20 m.