LED
LCD
Product Description
A highly popular, low-cost digital temperature and humidity sensor module, ideal for climate monitoring and environmental data logging in Arduino and ESP32 projects. This module integrates a resistive-type moisture measurement component and an NTC thermistor, paired with a high-performance 8-bit microcontroller that outputs calibrated digital data. It breaks out the standard raw DHT11 sensor onto a convenient 3-pin PCB that includes an onboard pull-up resistor and filtering capacitor, enabling direct plug-and-play wiring without external components. Delivering a single-wire digital signal that is highly resistant to interference over long cable runs, this module provides an easy-to-implement solution for indoor weather stations, automated terrariums, and home climate control systems.
Pinout / Layout Connections
The module breaks out its tracking and power interface via a standard 3-pin male header block:
VCC Pin: Power supply input, accepts DC +3.3V to +5V.
DATA Pin: Single-wire bidirectional digital data line. Connects directly to a digital I/O pin on the microcontroller.
GND Pin: Connects to the common system ground (0V) reference.
Applications
Indoor Weather Stations: Perfect for building simple desktop environmental monitors, clock-displays with climate readout, and local data loggers.
Greenhouse & Terrarium Control: Excellent for monitoring humidity and temperature baselines to maintain healthy conditions for plants or reptiles.
HVAC Smart Automation: Ideal for triggering cooling fans, ventilation systems, or humidifiers based on real-time room atmosphere profiles.
Compatibility
The DHT11 Module utilizes a specific single-wire serial protocol, making it universally supported across major development platforms:
Arduino Board Series (Uno, Nano, Mega, Pro Micro) using native timing and standard
DHT.hlibraries from Adafruit.ESP32 and ESP8266 boards (Fully compatible with 3.3V digital input lines without logic conversion).
Raspberry Pi and Raspberry Pi Pico (Easily interfaced using Python or MicroPython DHT libraries).
Technical Specifications
| Parameter | Value / Specification |
| Sensor Component Model | DHT11 (Mounted on 3-Pin Breakout PCB) |
| Operating Voltage Range | DC 3.3 V to 5.5 V |
| Humidity Measuring Range | 20% to 90% RH (Relative Humidity) |
| Humidity Accuracy Tolerance | $\pm 5\%\ \text{RH}$ |
| Temperature Measuring Range | 0 °C to +50 °C |
| Temperature Accuracy Tolerance | $\pm 2\ ^\circ\text{C}$ |
| Sampling Read Interval | 1.0 Second (Minimum period between consecutive data reads) |
| Current Consumption | ~0.5 mA active during data transmission, 100 $\mu$A idle |
What’s in the Box
1 x DHT11 Temperature and Humidity Sensor Module with Onboard Pull-Up Resistor.
1 x 3-Pin Female-to-Female DuPont Ribbon Cable.
