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DHT11 Humidity and Temperature Sensor
Measure ambient temperature and relative humidity with the reliable DHT11 digital sensor - ideal for weather stations, smart home systems, and IoT projects. Available at The Engineer Store, Bengaluru, with fast shipping and full technical support.
Specifications
| Sensor Type | Digital Temperature & Humidity Sensor |
| Model | DHT11 |
| Temperature Range | 0 degreesC to 50 degreesC (+/-2 degreesC accuracy) |
| Humidity Range | 20% to 90% RH (+/-5% RH accuracy) |
| Operating Voltage | 3.3V to 5.5V DC |
| Output Signal | Single-bus digital signal (proprietary one-wire protocol) |
| Sampling Rate | 1 reading per second (1 Hz) |
| Sensing Element | Resistive-type humidity sensor + NTC thermistor |
| Pin Configuration | VCC, DATA, NC (not connected), GND (4-pin inline) |
| Pull-Up Resistor | 4.7kOhm-10kOhm recommended on DATA line |
| Dimensions | Approx. 15.5mm x 12mm x 5.5mm |
| Weight | ~3g |
| Compatibility | Arduino, ESP8266, ESP32, Raspberry Pi, STM32, PIC, and more |
| Origin | Original / Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- Dual Measurement: Reads both temperature and relative humidity from a single sensor, reducing component count and wiring complexity.
- Simple Digital Interface: Communicates over a single data pin using a proprietary one-wire protocol - no analog-to-digital converter needed.
- Wide Voltage Tolerance: Operates reliably from 3.3V to 5.5V, making it compatible with both 3.3V and 5V logic-level microcontrollers.
- Factory Calibrated: Each sensor is individually calibrated at the factory with calibration coefficients stored in OTP memory for consistent readings out of the box.
- Low Power Consumption: Draws minimal current during standby and measurement, well-suited for battery-powered and solar-powered applications.
- Compact Form Factor: Small 4-pin inline package fits easily on breadboards, perfboards, and custom PCBs without taking up significant space.
- Extensive Library Support: Supported by popular libraries including Adafruit DHT, SimpleDHT, and DHTlib for Arduino, MicroPython, and CircuitPython environments.
- Long Transmission Distance: Reliable data transmission over cable lengths up to 20 meters, enabling remote sensor placement.
Why Choose the DHT11 from The Engineer Store?
- 100% authentic sensors sourced directly from authorized distributors - no clones or rejects.
- Every unit tested before dispatch to ensure accurate readings and reliable data output.
- 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery within Bengaluru.
- Expert technical support included - get help with wiring, code, and troubleshooting via email or WhatsApp.
- Ideal for beginners and professionals alike, backed by clear documentation and project guidance.
How It Works
The DHT11 contains a resistive-type humidity sensing element and an NTC (Negative Temperature Coefficient) thermistor. When the microcontroller sends a start signal on the DATA pin, the sensor responds with a 40-bit data frame containing 8-bit integer humidity, 8-bit decimal humidity, 8-bit integer temperature, 8-bit decimal temperature, and an 8-bit checksum. The microcontroller reads the pulse widths on the data line to decode each bit. A pull-up resistor (4.7kOhm-10kOhm) on the DATA line is required to keep the bus high during idle states. The entire read cycle completes in approximately 4 milliseconds, after which the sensor returns to low-power standby until the next request.
Wiring Guide
| DHT11 Pin | Connection |
| Pin 1 - VCC | 3.3V or 5V power supply |
| Pin 2 - DATA | Digital I/O pin on microcontroller (e.g., Arduino D2) with 4.7kOhm-10kOhm pull-up resistor to VCC |
| Pin 3 - NC | Not connected (leave floating) |
| Pin 4 - GND | Ground |
Project Ideas
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy DHT11 Humidity and Temperature Sensor Online in India
Purchase the DHT11 Humidity and Temperature Sensor online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on DHT11 Humidity and Temperature Sensor with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy DHT11 Humidity and Temperature Sensor at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
```html
DHT11 Humidity and Temperature Sensor
Measure ambient temperature and relative humidity with the reliable DHT11 digital sensor - ideal for weather stations, smart home systems, and IoT projects. Available at The Engineer Store, Bengaluru, with fast shipping and full technical support.
Specifications
| Sensor Type | Digital Temperature & Humidity Sensor |
| Model | DHT11 |
| Temperature Range | 0 degreesC to 50 degreesC (+/-2 degreesC accuracy) |
| Humidity Range | 20% to 90% RH (+/-5% RH accuracy) |
| Operating Voltage | 3.3V to 5.5V DC |
| Output Signal | Single-bus digital signal (proprietary one-wire protocol) |
| Sampling Rate | 1 reading per second (1 Hz) |
| Sensing Element | Resistive-type humidity sensor + NTC thermistor |
| Pin Configuration | VCC, DATA, NC (not connected), GND (4-pin inline) |
| Pull-Up Resistor | 4.7kOhm-10kOhm recommended on DATA line |
| Dimensions | Approx. 15.5mm x 12mm x 5.5mm |
| Weight | ~3g |
| Compatibility | Arduino, ESP8266, ESP32, Raspberry Pi, STM32, PIC, and more |
| Origin | Original / Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- Dual Measurement: Reads both temperature and relative humidity from a single sensor, reducing component count and wiring complexity.
- Simple Digital Interface: Communicates over a single data pin using a proprietary one-wire protocol - no analog-to-digital converter needed.
- Wide Voltage Tolerance: Operates reliably from 3.3V to 5.5V, making it compatible with both 3.3V and 5V logic-level microcontrollers.
- Factory Calibrated: Each sensor is individually calibrated at the factory with calibration coefficients stored in OTP memory for consistent readings out of the box.
- Low Power Consumption: Draws minimal current during standby and measurement, well-suited for battery-powered and solar-powered applications.
- Compact Form Factor: Small 4-pin inline package fits easily on breadboards, perfboards, and custom PCBs without taking up significant space.
- Extensive Library Support: Supported by popular libraries including Adafruit DHT, SimpleDHT, and DHTlib for Arduino, MicroPython, and CircuitPython environments.
- Long Transmission Distance: Reliable data transmission over cable lengths up to 20 meters, enabling remote sensor placement.
Why Choose the DHT11 from The Engineer Store?
- 100% authentic sensors sourced directly from authorized distributors - no clones or rejects.
- Every unit tested before dispatch to ensure accurate readings and reliable data output.
- 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery within Bengaluru.
- Expert technical support included - get help with wiring, code, and troubleshooting via email or WhatsApp.
- Ideal for beginners and professionals alike, backed by clear documentation and project guidance.
How It Works
The DHT11 contains a resistive-type humidity sensing element and an NTC (Negative Temperature Coefficient) thermistor. When the microcontroller sends a start signal on the DATA pin, the sensor responds with a 40-bit data frame containing 8-bit integer humidity, 8-bit decimal humidity, 8-bit integer temperature, 8-bit decimal temperature, and an 8-bit checksum. The microcontroller reads the pulse widths on the data line to decode each bit. A pull-up resistor (4.7kOhm-10kOhm) on the DATA line is required to keep the bus high during idle states. The entire read cycle completes in approximately 4 milliseconds, after which the sensor returns to low-power standby until the next request.
Wiring Guide
| DHT11 Pin | Connection |
| Pin 1 - VCC | 3.3V or 5V power supply |
| Pin 2 - DATA | Digital I/O pin on microcontroller (e.g., Arduino D2) with 4.7kOhm-10kOhm pull-up resistor to VCC |
| Pin 3 - NC | Not connected (leave floating) |
| Pin 4 - GND | Ground |
Project Ideas
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy DHT11 Humidity and Temperature Sensor Online in India
Purchase the DHT11 Humidity and Temperature Sensor online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on DHT11 Humidity and Temperature Sensor with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy DHT11 Humidity and Temperature Sensor at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.