AJMRTC DHT22 (AM2302) Digital Temperature Humidity Sensor Module, Single-Wire Bus, High Precision, Replaces SHT11 SHT15, for Arduino, Raspberry Pi, DIY Weather Station, Greenhouse Monitoring

DHT22 / AM2302 temperature and humidity sensor uses a capacitive humidity sensing element and high-precision thermistor. It transmits data through a single digital bus. Compared with DHT11, it provides higher accuracy and wider measurement range. It can directly replace SHT11 and SHT15 in many environmental monitoring projects. The module comes with pull-up resistor on PCB, plug and play after simple wiring. Widely used for weather stations, plant greenhouses, storage cabinets, smart agriculture and home environmental detection.

Specifications

1. Model: DHT22 (AM2302)
2. Signal Type: Digital single-wire
3. Humidity Range: 0%RH ~ 99.9%RH
4. Humidity Accuracy: ±2%RH
5. Temperature Range: -40 ~ +80
6. Temperature Accuracy: ±0.5
7. Supply Voltage: DC 3.3V ~ 5V
8. Sampling Period: 2s
9. Communication: Single bus
10. Replacement: SHT11, SHT15
11. Application: Arduino, Raspberry Pi, greenhouse, weather station, smart home, storage monitoring