Overview

The DHT temperature and humidity sensor is a digital sensing module that combines both temperature and humidity detection functions. It has a built-in digital signal processing unit that can simultaneously read ambient temperature and relative humidity, transmitting the data via a single digital signal pin. It is suitable for smart home systems, environmental monitoring, educational projects, etc., and features a compact size, low power consumption,

and simple operation.

Features

• Supports 3.3V to 5V operating voltage

• Detects both temperature and relative humidity

• Single digital pin outputs both parameters (temperature + humidity)

• Stable accuracy, suitable for general environmental monitoring

• Built-in signal filtering and temperature compensation for strong anti-interference

• Temperature measurement range: 0 ~ 50°C, accuracy ±2°C

• Humidity measurement range：20 ~ 90% RH, accuracy ±5% RH

Application

• Environmental variable monitoring

• Air quality monitoring in smart agriculture

• Indoor climate control (e.g., air conditioning or dehumidifiers)

• DIY weather stations or IoT nodes

Electrical Characteristics

Definitions：

1. Typ* refers to the typical value under standard conditions; it is not the minimum or the maximum limit.

2. Temperature and Humidity Accuracy* indicate the maximum deviation after internal calibration.

3. Data Update Cycle*: This module uses the DHT11 chip, which updates data once per second. It is recommended that the reading interval is not less than 1 second.

Pinout