Temperature/Humidity Sensor Products
Created:
16May2023 18:51:43 UTC
2023-05-16T18:51:43Z
Updated:
08May2024 22:50:40 UTC
2024-05-08T22:50:40Z
Description
Temperature/Humidity sensors typically combine an I2CInter-Integrated Circuit. Also referred to as IIC or I2C. thermistor or semiconductor temperature sensor to measure ambient temperature and capacitive humidity sensor to measure the percent relative humidity (%RHRelative humidity measures the percentage of water vapor content in the air at a specified temperature. It is relative to the maximum possible amount of water vapor the air can hold at that temperature. ). This combined package also contains an ICIntegrated Circuit that reads in the analog signals from the two sensors with an ADCAnalog-to-Digital Converter (ADC, A/D, or A-to-D), processes the data using stored calibration coefficients, then outputs a digital signal containing the temperature and relative humidity.
Model & Datasheet |
Temperature Range & Accuracy |
Humidity Range & Accuracy |
Operating Voltage |
COMCommunication |
---|---|---|---|---|
DHT11 |
Range:
0°C to +50°C
Accuracy:
±2°C |
Range:
20% to 90% RH
Accuracy:
±5% RH |
3.5V to 5.5V DC | 1-Wire |
DHT22 / AM2302 |
Range:
-40°C to +80°C
Accuracy:
±0.5°C |
Range:
0% to 100% RH
Accuracy:
±2% to ±5% RH |
3V to 5V DC | 1-Wire |
DHT12 / AM2320 |
Range:
-40°C to +80°C
Accuracy:
±0.5°C |
Range:
0% to 99.9% RH
Accuracy:
±3% RH |
3.1V to 5.5V DC | 1-Wire |
Si7021 |
Range:
-40°C to +125°C
Accuracy:
±0.4°C |
Range:
0% to 100% RH
Accuracy:
0% to 80% RH with ±3% RH |
1.9V to 3.6V DC | I2C |
HTU21D |
Range:
-30°C to +90°C
Accuracy:
±1°C |
Range:
0% to 100% RH
Accuracy:
5% to 95% RH with ±2% RH |
1.9V to 3.6V DC | I2C |
SHT31 |
Range:
-40° to +125°C
Accuracy:
±0.3°C |
Range:
0% to 100% RH
Accuracy:
±2% RH |
2.4V to 5.5V DC | I2C |
DHT11
- 1x DHT Modules
- 1x 4.7K or 10K resistor, which you will want to use as a pullup from the data pin to VCC
- 5x DHT Modules
- 15x Dupont Cables
- 2x DHT Modules
- 6x Dupont Cables
DHT22/AM2302
- 2x DHT Modules
- 6x Dupont Cables
- 2x DHT Modules
- 6x Dupont Cables
DHT12/AM2320
- 2x Sensor Modules
- 1x Sensor Modules
- 3x Dupont cables
Si7021
- 1x Sensor Module
- 1x 5-Pin Straight Male Header
- 1x Sensor Module
- 1x 5-Pin Straight Male Header
- 1x Sensor Module
- 1x Sensor Module
- 2x Sensor Modules
- 2x 4P header
HTU21D
- 1x Sensor Module
- 1x 6P header
- 1x Sensor Module
- 1x 4P header
- 5x Sensor Module
- 5x 4P header
SHT31
- 1x Sensor Module
- 1x 8-Pin Straight Male Header
- 1x Sensor Module
- 1x 8-Pin Straight Male Header
- 1x Sensor Module
- 3x Sensor Module
- 3x 6P header
- 1x Sensor Module
- 1x 6P header
- 1x Sensor Module
- 1x 22AWG JST 4-Pin to Dupont cable
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