DHT11 Digital Temperature and Humidity Sensor Module for Arduino
The DHT11 module measures ambient temperature from 0°C to 50°C and relative humidity from 20% to 80% RH, outputting both values over a single-wire serial protocol. An onboard pull-up resistor and the NTC thermistor-based sensor chip are pre-mounted on a PCB with a 3-pin header — the module is ready to connect directly to an Arduino digital pin without any external components. The DHT11 library returns readings in under 2 seconds per sample.
- Temperature range — 0°C to 50°C, +/-2°C accuracy
- Humidity range — 20% to 80% RH, +/-5% accuracy
- Single-wire serial output — one digital pin for both measurements
- 3.5V–5V supply — onboard pull-up, connects directly to Arduino
- Minimum sampling period — 1 second between readings
| Specification | Value |
|---|---|
| Temperature range | 0°C – 50°C |
| Temperature accuracy | +/-2°C |
| Humidity range | 20% – 80% RH |
| Humidity accuracy | +/-5% RH |
| Interface | Single-wire serial |
| Supply voltage | 3.5V – 5.5V |
| Sampling rate | Max 1 Hz (1 reading per second) |
What is the difference between DHT11 and DHT22?
The DHT22 measures -40°C to +80°C (versus 0–50°C for the DHT11), reads humidity from 0–100% RH (versus 20–80%), and achieves +/-0.5°C temperature accuracy (versus +/-2°C). The DHT11 is sufficient for indoor room temperature and humidity projects; upgrade to the DHT22 when you need outdoor range, condensing humidity measurements, or higher accuracy.
Best for
Arduino home weather stations, indoor air quality monitors, greenhouse humidity control, STEM school temperature experiments, smart home thermostat inputs, dehumidifier controllers, and any beginner Arduino project needing both temperature and humidity from one sensor.
Why Kunkune
Shipped from UK stock. 60-day returns, no minimum order. Fast Royal Mail delivery.
For ±0.3°C accuracy and a calibrated digital output, the AHT10 sensor is a straightforward upgrade from the DHT11.
Buying in bulk? For orders of 10+ units, contact us for trade pricing.
