Temperature and relative humidity sensor (SHT21)

Sensor SHT21 is Sensirion's relative humidity and air temperature sensor that sets new standards in terms of its size and intelligence. It comes with a white protective guard whose function is to block the sensor from direct sunlight and direct impact of the wind, while at the same time shapes the air filtration to get the most accurate temperature results.

Technical characteristics of the temperature and relative humidity sensor (SHT21)

Mesurment charachteristic                        

Relative humidity

Temperature

Resolution

0.1%

0.04°C

Accuracy

±3%

±0.3°C

 

 

 

Repeatability

±0.1%

±0.1°C

Response time(63%)              

10s

15s

Work area                  

0 to 100%

-40 to 125 °C

 

Electrical characteristics

 

Power supply voltage

2.1-3.6 V

Power supply          

At idle 0.15 μA; in measurment 300 μA      

Stress loss power

At idle 0.50 μW; in measurment 0.9 mW

Communication

digital two-way interface, I2C protokol

 

Technical characteristics

 

Sensor box           

POM pipe profile ∅15 mm

Sensor protection                

70 μm stainless steel mesh

Cable lenght                                

1.5m

Connector

3.5mm stereo connector

Dimensions

∅15 x 160 mm

Weight

75 g

Warranty

12 months