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    AJMRTC DHT21 AM2301 Capacitive Digital Temperature Humidity Sensor Module, Calibrated Digital Signal, Non-contact Ranging Sensing for Arduino ESP32 Greenhouse Warehouse Climate Monitoring

    • 1. Adopt capacitive sensing technology for stable temperature and humidity measurement
    • 2. Built-in calibrated digital signal output, simple single-wire communication
    • 3. Wide measuring range: Temperature -40 ~ 80, Humidity 0%RH ~ 99.9%RH
    • 4. Strong anti-interference ability, long transmission distance for indoor and greenhouse use
    • 5. Low power consumption, compact through-hole package for easy PCB installation
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    Overview
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    Any questions? Ask CelesteSM will help you find out quickly.

    AJMRTC DHT21 (AM2301) digital temperature and humidity sensor is a high-precision capacitive sensing component. It integrates sensing element and signal processing chip on one board. It transmits temperature and humidity data through single-bus digital interface, no complicated analog conversion circuit required. It performs better stability and anti-interference compared with ordinary DHT11 sensors. It is widely used for greenhouse planting, warehouse environment monitoring, smart home, weather station and HVAC control projects, compatible with Arduino, ESP32 and STM32.


    Specifications

    1. Model: DHT21 / AM2301
    2. Sensing Type: Capacitive humidity sensor
    3. Temperature Range: -40 ~ +80
    4. Humidity Range: 0%RH ~ 99.9%RH
    5. Interface: Single-bus digital signal
    6. Supply Voltage: DC 3.3V ~ 5V
    7. Accuracy: ±0.5 temp, ±3%RH humidity typical
    8. Feature: Factory calibrated, low power consumption
    9. Application: Greenhouse, warehouse, smart home, weather station, HVAC
    10. Compatible: Arduino, ESP32, STM32, Raspberry Pi


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