- High precision
- Capacitive type
- Full range temperature compensated
- Relative humidity and temperature measurement
Description
The DHT22 is a basic, low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and DHT22 output calibrated digital signal. It utilizes exclusive digital-signal-collecting-technique and humidity sensing technology, assuring its reliability and stability.Its sensing elements is connected with 8-bit single-chip computer. Every sensor of this model is temperature compensated and calibrated in accurate calibration chamber and the calibration-coefficient is saved in type of programme in OTP memory, when the sensor is detecting, it will cite coefficient from memory. Small size & low consumption & long transmission distance(20m) enable DHT22 to be suited in all kinds of harsh application occasions. Single-row packaged with four pins, making the connection very convenient.
Specification:
- Main chip: Ozon DHT22 temperature and humidity sensor
- Working Voltage: 5VDC
- Output: Digital
- Humidity measuring range: 0---100%RH
- Humidity measurement accuracy: ± 2%RH
- Temperature measuring range: -40 --- 80
- Temperature measurement accuracy: ± 0.5
- Size: 28*12*10mm
Packing List:
- 1 x DHT22 Humidity Sensor Module
Attachment:
- 1 x DHT22 Humidity Sensor Module