The CMU ASAIR Original DHT22 (AM2302B) Temperature and Humidity Sensor is a high-performance, factory-calibrated digital sensor module designed for accurate environmental monitoring. Without a PCB, this standalone sensor is ideal for integration into custom designs and embedded systems where precision and compactness are key.
Key Features:
- Accurate Temperature & Humidity Measurement:
Utilizes a capacitive humidity sensing element and NTC temperature sensor for precise readings. Temperature accuracy is 0.5 C, and humidity accuracy is 2%RH. - Calibrated Digital Output:
Each sensor is individually calibrated in a controlled humidity chamber, with calibration data stored in OTP memory for internal signal processing correction. - Single-Wire Communication:
Communicates via a single-bus digital signal, transmitting 40 bits of data per cycle, using a simple and reliable interface with high noise immunity. - High Reliability & Stability:
Digital module acquisition and sensing technologies ensure long-term stability, fast response, and strong resistance to interference. - Compact and Energy Efficient:
Low power consumption and small size make it suitable for portable or battery-powered applications.
Specifications:
- Supply Voltage (Vin): DC 3.3-5.5V
- Output Signal: Single-bus digital signal
- Display Resolution: 0.1 C or 0.1%RH
- Temperature Range: -40 C to +80 C
- Humidity Range: 0% to 99.9% RH
- Temperature Accuracy: 0.5 C
- Humidity Accuracy: 2% RH
- Acquisition Cycle: 1/e(63%) < 5s
- Storage Temperature Range: 0 C to -80 C
- Storage Humidity Range: 95% RH (non-condensing)
- Sensor Weight: 15g
- Housing Material: PC plastic - strong, fatigue-resistant, solvent- and heat-aging-resistant with excellent insulation properties
This AM2302B (DHT22) sensor is ideal for demanding temperature and humidity monitoring applications where precision, reliability, and compact integration matter-ranging from home automation and HVAC systems to industrial and environmental monitoring.
What's in the box
1 x CMU ASAIR Original DHT22/AM2302 Temp & Humidity Sensor - No PCB
