DHT11 Temperature and Humidity Sensor Module with Onboard Pull-up Resistor & Filter Capacitor for Arduino

DHT11 Module – High-Reliability Digital Temperature and Relative Humidity Sensor

The DHT11 Module is the most popular, cost-effective, and highly reliable digital environmental sensor used by electronics hobbyists, IoT developers, and engineering students across India. Utilizing a specialized digital-signal-acquisition technique and an embedded 8-bit microcontroller, the DHT11 Module translates complex atmospheric conditions into clean, pre-calibrated single-wire digital data. This composite sensor integrates a resistive-type moisture measurement component alongside a high-precision NTC (Negative Temperature Coefficient) thermistor, ensuring excellent long-term operational stability and fast response times.

This listing is for the upgraded 3-pin **DHT11 Sensor Module** variant. Unlike the bare 4-pin IC sensor which requires manual wiring layout planning, this pre-assembled breakout board includes a built-in power-filtering capacitor and an onboard data line pull-up resistor—allowing pure plug-and-play connections to your development kits. Complete your embedded environmental system setup by pairing this with our premium Arduino Development Boards and premium Female-to-Female Jumper Wires at VirtualPathshala.

Why Choose the Breakout DHT11 Module Over the Bare Sensor?

Connecting a raw sensor component often introduces noise anomalies, voltage ripples, and communication dropouts if the appropriate external hardware tolerances are miscalculated. The breakout DHT11 Module eliminates this complexity entirely by housing the supporting circuitry on a compact, breadboard-friendly PCB footprint. It breaks out only three essential terminal pins—VCC, GND, and Digital Signal Data—meaning you do not need to solder external 5K-10K ohm pull-up resistors or calculate filtering capacitor values to establish clean serial synchronization with your microcontroller hardware.

Key Features of the DHT11 Module

1. Calibrated Digital Single-Bus Signal Interface

The DHT11 Module communicates with host microcontrollers using a custom single-wire bi-directional serial protocol. Every single data packet transmission spans a complete 40-bit array, which breaks down into an 8-bit relative humidity integer, 8-bit decimal relative humidity fraction, 8-bit temperature integer, 8-bit decimal temperature fraction, and a final 8-bit parity check bit for error validation. This digital stream means your data remains completely immune to signal degradation across long connecting wires.

2. Dual-Environment Measurement Spectrum

This compact component simultaneously tracks two fundamental atmospheric data metrics on a single data bus line. It maps relative ambient humidity zones ranging across 20% to 90% RH alongside temperature profiles scaling from 0°C up to 50°C. This dual-sensing utility makes it an indispensable, low-overhead addition to localized climate logging grids and automated equipment enclosures.

3. Low-Power Operational Efficiency

Designed with remote battery power limits in mind, the sensor draws minimal electrical current. During active environmental conversions, its power consumption peaks at a minor 2.5mA max, which drops drastically down to an ultra-low 60µA standby current between measurement windows. This low current overhead helps preserve your battery life when running low-power solar node systems.

4. Comprehensive Microcontroller Universality

Thanks to its wide operating voltage support matching 3.3V to 5.5V DC logic levels, the DHT11 Module interfaces flawlessly across multiple hardware platforms without requiring external level-shifter chips:

• ✅ Arduino Uno / Mega / Nano – Direct 5V Pin Connection
• ✅ ESP8266 / ESP32 NodeMCU Boards – Direct 3.3V Input Compatibility
• ✅ Raspberry Pi Pico & MicroPython Ecosystems – Native 3.3V Logic Support
• ✅ STM32 & MSP430 Launchpads – Standard Digital I/O Interfacing

5. Factory Calibrated Internal Parameters

Every single DHT11 sensing element undergoes rigorous calibration in extremely precise laboratory calibration chambers. The unique internal calibration coefficients are securely stored right inside the embedded microcontroller’s OTP (One-Time Programmable) memory bank. When reading sensor registers, the system automatically pulls these hidden coefficients to correct raw readings before sending them over the wire.

DHT11 Module – Full Technical Specifications

What Is Included inside the Package

• ✅ 1× Pre-Assembled DHT11 Temperature and Humidity Sensor Breakout Module
• ✅ 1× 3-Pin Female-to-Female Ribbon Jumper Cable Set

Frequently Asked Questions – DHT11 Module

What is the core difference between a bare DHT11 sensor and this DHT11 module?

The bare blue DHT11 component houses 4 raw pins and requires you to manually place a 5K to 10K ohm pull-up resistor between its power VCC pin and digital data output pin to avoid reading glitches. This **DHT11 Module** mounts that component onto a small PCB that contains the pull-up resistor and a noise-filtering capacitor already soldered on, bringing your custom wire count down to 3 clean plug pins.

Can I query the DHT11 Module at a speed of 10 times per second?

No. The **DHT11 Module** is an inherently slow environmental sensor that possesses a fixed internal sampling rate threshold of 1 Hz (one reading execution per second). Forcing your Arduino source loop to request temperature values faster than the 1-second interval will result in duplicate cached readings, communication timeout failures, or checksum syntax calculation errors.

Why does my Arduino Serial Monitor report “NAN” or failed sensor readings?

This is almost always triggered by a simple wiring mapping error or a loose hookup contact point. Double-check that your module’s VCC line maps to 5V/3.3V, GND connects to system ground, and the signal Out pin is configured to the exact digital pin number specified inside your Arduino sketch setup code lines. Also, verify you have chosen the appropriate “DHT11” sensor macro string inside the Adafruit library configuration variables.

Order Your DHT11 Sensor Module Online Today

Launch your smart greenhouse automation tracking array, home climate logger, or environmental IoT project with the most popular low-cost sensing tool in the tech industry. Supplied with fast shipping parameters and direct invoice documentation across India via VirtualPathshala. For official open-source code libraries, wiring schematic templates, and hardware hookup sheets, please review the Official Factory DHT11 Datasheet Repository.