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DHT11 Heat and Humidity Sensor Card
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DHT11 Thermal and Humidity Sensor Board
This module combines the DHT11 sensor and other necessary components on a small PCB. The DHT11 sensor includes a resistive humidity measurement component, an NTC temperature measurement component, and a high-performance 8-bit microcontroller and provides calibrated digital signal output. It has high reliability and excellent long-term stability thanks to its special digital signal acquisition technique and temperature and humidity sensing technology.
DHT11 is a simple, ultra-low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure ambient air and outputs a digital signal on the data pin (no analog input pins required). It's pretty simple to use, but requires careful timing to capture data.
Features:
- Low cost
- 3 - 5V power and I/O
- 2.5mA maximum current usage during conversion
- Good for humidity values of 20-80% with 5% accuracy
- Good for temperature readings of 0-50 °C ± 2 °C accuracy
- Maximum 1 Hz sampling rate (every second)
- Body size 15.5mm x 12mm x 5.5mm
- 4 pins 0.1" apart
Connection:
1. VCC: + 3.3V ~ 5V
2. Data: IO Port
3. GND: GND
Arduino Connection Diagram:
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