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ACEBOTT Smart Small Electronic DHT11 5V Digital Output Signal Temperature Humidity Sensor Module for Arduino Factory Sensor
Product Description
Product Overview
DHT11 Temperature and humidity sensor is a sensor based on the digital temperature and humidity sensor DHT11. It is a combination of temperature and humidity sensor, which converts physical temperature and humidity through the temperature, humidity sensor and the corresponding circuit into a digital quantity that is convenient for data acquisition equipment to read directly.
DHT11 is composed of a resistive humidity sensing device and an NTC coefficient temperature sensing device, featuring calibrated digital signal output. Using a single-bus serial interface, the output data consists of a total of 5 bytes: Humidity integer, humidity digit, temperature integer, temperature digit, and checksum. The checksum is the low 8-bit binary complement of the result of adding each byte of data. If the checksum calculation result does not match the last byte of data sent by DHT11, the data may be wrong and must be re-obtained.
Application Reference
This module can be used for weather stations, temperature and humidity regulators, and related environmental monitoring systems.
Technical Specifications
| Operating voltage | 3.3V ~ 5V |
| Operating temperature | -20°C ~ +60°C ±2°C |
| Humidity range | 5 ~ 95%RH ±5%RH |
| Output signal | Digital signal (Single-bus) |
| Size | 3.16cm * 2.38cm |
Product & Dimension Gallery
Frequently Asked Questions
What components make up the DHT11 sensor?
The DHT11 consists of a resistive humidity sensing device, an NTC coefficient temperature sensing device, and dedicated circuitry that converts environmental measurements into a calibrated digital signal.
What is the required operating voltage for this module?
The DHT11 module supports an operating voltage range of 3.3V to 5V, making it compatible with standard microcontrollers and data acquisition devices.
What are the measuring range and accuracy specifications?
The module measures temperature from -20°C to +60°C with an accuracy of ±2°C, and humidity from 5% to 95%RH with an accuracy of ±5%RH.
How is data transmitted over the interface?
Data is transmitted via a single-bus serial interface as a 5-byte sequence consisting of humidity integer, humidity decimal digit, temperature integer, temperature decimal digit, and a checksum byte.
How does the checksum validation work?
The checksum is verified against the lower 8 bits of the sum of the preceding 4 data bytes. If the checksum calculated does not match the final transmitted byte, the readout is considered erroneous and must be re-acquired.
What applications is this module suitable for?
This sensor module is suited for applications such as weather stations, temperature and humidity regulators, climate monitoring devices, and automated environmental control systems.
