Product Details
Product Introduction The DHT22 digital temperature and humidity sensor is a combined temperature and humidity sensor with a calibrated digital signal output. It utilizes dedicated digital module acquisition and temperature and humidity sensing technology to ensure high reliability and excellent long-term stability. The sensor consists of a capacitive humidity sensor and an NTC temperature sensor, connected to a high-performance 8-bit microcontroller. This product offers fast response, strong anti-interference capabilities, and a very cost-effective price. Each DHT22 sensor is calibrated in a humidity calibration laboratory. Calibration coefficients are stored as a program in 0TP memory and are used internally by the sensor during signal processing. A single-wire serial interface facilitates quick and easy system integration. Its compact size, low power consumption, and signal transmission distance of up to 20 meters make it an ideal choice for a wide range of applications, even in the most demanding environments. The product is packaged in a 4-pin, single-row package for easy connection, and special packaging options are available upon request. |
Product Applications
This product is widely used in HVAC, test and inspection equipment, automobiles, data loggers, consumer products, automatic control, weather stations, home appliances, humidity regulators, medical devices, dehumidifiers, etc.
Product Description
| Operating voltage | DC 3.3V-5V |
| Humidity measurement range | 0-100% RH |
| Humidity measurement accuracy | ±2% RH |
| Temperature measurement range | -40-80°C |
| Temperature measurement accuracy | ±0.5°C |
| Response time | Humidity <5s, 6s <Temperature <20s |
| Dimensions | 38*15*10mm |
| Operating voltage | DC 5V Common |
| Single-bus digital signal output, bidirectional serial data port; | |
| Digital signal output, data port with pull-up resistor, 3mm mounting screw hole | |
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