SKU: SENS-3483
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Generic DHT11 Digital Temperature & Humidity Sensor Module

₹51.00 (Inclusive of all taxes)
Out of Stock

The DHT11 is a low-cost digital temperature and humidity sensor module compatible with 3.3V and 5V microcontrollers like Arduino, Raspberry Pi, and ESP32. It provides calibrated digital output for environmental monitoring projects.

Features

  • Integrated capacitive humidity sensor and thermistor for combined measurement.
  • Single-wire digital signal output simplifies interface with microcontrollers.
  • Wide operating voltage range from 3.3V to 5.5V DC.
  • Onboard pull-up resistor, power LED, and mounting holes for easy integration.
  • Standard 2-second sampling period ensures stable data acquisition.

Out of stock

Description

The DHT11 module integrates a calibrated capacitive humidity sensor and a thermistor to deliver stable digital readings for ambient air conditions. It communicates via a proprietary single-bus protocol, requiring precise timing but eliminating the need for analog-to-digital conversion on the host controller.

Designed for basic environmental monitoring, the sensor offers a cost-effective solution with moderate accuracy suitable for non-critical applications. Its compact PCB includes a power indicator LED, a decoupling capacitor, and a pull-up resistor, making it ready for direct connection to development boards.

Key Features

  • Combined digital temperature and humidity sensing on a single chip.
  • Fully calibrated digital output simplifies system integration.
  • Low power consumption suitable for battery-powered devices.
  • Compact PCB design with 2.0mm mounting holes for secure installation.
  • Excellent long-term stability and fast response time.
  • High reliability for consumer-grade environmental monitoring.
  • Optimized performance-to-cost ratio for educational and prototyping use.

Applications

  • Basic indoor climate monitoring and data logging systems.
  • Educational projects for Arduino and Raspberry Pi involving environmental sensing.
  • Prototyping for smart home appliances like dehumidifiers or fan controllers.
  • Integration into simple weather stations for temperature and humidity tracking.
  • Non-critical HVAC and greenhouse monitoring systems.

Technical Specifications

Sensor ModelDHT11
Supply Voltage3.3V to 5.5V DC
Temperature Range0°C to 50°C
Temperature Accuracy±2.0°C
Humidity Range20% to 95% RH
Humidity Accuracy±5% RH
Output SignalDigital (Single-Bus)
Sampling Period2 Seconds (0.5 Hz)
PCB Dimensions (LxW)19 mm x 17 mm
PCB WeightApprox. 0.6 g
Onboard FeaturesPower LED, Pull-up Resistor, Decoupling Capacitor, Mounting Holes

Frequently Asked Questions

What is the operating voltage range for the DHT11 module?

The DHT11 module operates from 3.3V to 5.5V DC, making it directly compatible with most 5V Arduino boards and 3.3V logic systems like Raspberry Pi or ESP32 without requiring a logic level shifter.

How do I read data from the DHT11 sensor with an Arduino?

Connect the module's VCC, GND, and DATA pins to your Arduino. Use a library like "DHT sensor library" to handle the precise timing required by the single-wire digital protocol. Ensure your code includes a delay of at least 2 seconds between sensor readings.

What is the accuracy and measurement range of the DHT11?

The temperature measurement range is 0°C to 50°C with an accuracy of ±2°C. The humidity measurement range is 20% to 95% Relative Humidity with an accuracy of ±5% RH. It is suitable for basic monitoring but not for precision applications.

Why is there a 2-second delay required between readings?

The DHT11 sensor requires a settling time for its internal capacitive and resistive elements. The 2-second sampling period (0.5 Hz update rate) is mandated by the sensor's design to ensure stable and reliable data output. Reading faster may return invalid data.

Package Includes

  • 1 x DHT11 Digital Temperature & Humidity Sensor Module

Additional Information

Weight 0.0006 kg
Dimensions 1.9 × 1.7 cm