DHT21 Sensor Temperature and Humidity Module
DHT21 Sensor Specification:Â
- Model: AM2301
- Power supply: 3.3-5V DC
- Output signal: digital signal via single-bus
- Sensing element: Polymer humidity capacitor
- Measuring range: humidity 0-100%RH; temperature -40~80Celsius
- Accuracy: humidity +-3%RH(Max +-5%RH); temperature <+-1Celsius
- Resolution or sensitivity: humidity 0.1%RH; temperature 0.1Celsius
- Repeatability: humidity +-1%RH; temperature +-0.2Celsius
- Humidity hysteresis: +-0.3%RH
- Long-term Stability: +-0.5%RH/year
- Sensing period: Average: 2s
- Dimensions size 59*27*13.5mm
₨700
CompareThe DHT21 sensor digital temperature sensor is one of the commonest from the range of DHT temperature sensors and boasts a relatively high-temperature measurement accuracy of 0.5oC in 0.1oC steps with a relative humidity accuracy of +/- 3%. It has only 3 wires, including power and ground, meaning only one digital pin is required to interface it to a microcontroller. For Arduino development platforms the sensor is very well supported by the DHT library available from the Arduino Playground website.
DHT21 sensor price in pakistan
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DHT22 Temperature and Humidity Sensor
DHT22 Sensor for Temperature and Humidity TECHNICAL DETAILS
- Low cost
- 3 to 5V power and I/O
- 2.5mA max current use during conversion (while requesting data)
- Good for 0-100% humidity readings with 2-5% accuracy
- Good for -40 to 80°C temperature readings ±0.5°C accuracy
- No more than 0.5 Hz sampling rate (once every 2 seconds)
- Body size 27mm x 59mm x 13.5mm (1.05″ x 2.32″ x 0.53″)
- 4 pins, 0.1″ spacing
- Weight (just the DHT22): 2.4g
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