DHT11 Temperature Humidity Sensor – Digital Output, 0-50°C
DHT11 Temperature and Humidity Sensor – Reliable Digital Sensor for Environmental Monitoring
The DHT11 is a basic, low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, providing a calibrated digital signal on a single data pin. Ideal for maker projects, weather stations, and home automation, the DHT11 delivers stable readings with update rates up to 1 Hz.
Key Specifications
| Specification | Value |
|---|---|
| Operating Voltage | 3.3V to 5V DC |
| Temperature Range | 0°C to 50°C (±2°C accuracy) |
| Humidity Range | 20% to 80% RH (±5% accuracy) |
| Sampling Rate | 1 Hz (once per second) |
| Output | Digital signal (single-wire protocol) |
| Dimensions | 15.5mm x 12mm x 5.5mm |
What You Can Build With This
- Indoor weather station displaying temperature and humidity on an LCD
- Automated fan control based on room temperature
- Greenhouse monitoring system with alerts
- Data logger for environmental conditions using a microcontroller
Compatibility
The DHT11 works with any microcontroller capable of digital I/O. Commonly paired with Arduino Uno, Nano, ESP8266, ESP32, and Raspberry Pi (with 3.3V or 5V tolerance). The single-wire protocol is supported by standard libraries, making integration straightforward.
Wiring Notes
Connect VCC to 3.3V–5V, GND to ground, and the DATA pin to a digital pin on your microcontroller. A pull-up resistor (4.7kΩ–10kΩ) between DATA and VCC is required for signal stability. Avoid long cable runs to prevent noise.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino Uno?
Yes, the DHT11 can be directly connected to any digital pin on an Arduino Uno. Use the DHT library for easy reading.
What is the maximum sampling rate?
The DHT11 updates readings at most once per second (1 Hz). Faster polling may return stale data or cause errors.
Can it be used outdoors?
The DHT11 is not waterproof and is rated for 0–50°C, 20–80% RH. For outdoor use, place it in a sheltered enclosure to avoid direct exposure.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
What you can build with this
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items