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GY21 SHT21 HTU21D cseréli az SI7021 hőmérséklet és páratartalom érzékelő modul I2C interfészét
GY21 SHT21 HTU21D replace SI7021 temperature and humidity sensor module I2C interface
SHT21 module and HTU21D module can directly replace SI7021 module with the same accuracy.
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Temperature and humidity module
GY21-SI7021-5V temperature and humidity sensor
Module model: GY21-SHT21 GY-HTU21D
Use chip: SHT21 HTU21D
Power supply: 3-5v (with level conversion function)
Module size: 10mm*12mm
Weight: 2g
Provide ardhino test code:
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Features
Precision Relative Humidity Sensor
± 3% RH (max), 0–80% RH
High Accuracy Temperature Sensor
±0.4 °C (max), –10 to 85 °C
0 to 100 hundred RH operating range
Up to –40 to 125 °C operating range
Wide operating voltage (1.9 to 3.6 V)
Low Power Consumption 150 μA active current
60 nA standby current
Factory-calibrated
I2C Interface
Integrated on-chip heater
3x3 mm DFN Package
Excellent long term stability
Optional factory-installed cover
Low-profile
Protection during reflow
Excludes liquids and particulates
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Applications
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HVAC/R
Thermostats/humidistats
Respiratory therapy
White goods
Indoor weather stations
Micro-environments/data centers
Automotive climate control and defogging
Asset and goods tracking
Mobile phones and tablets
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The Si7021 I2C Humidity and Temperature Sensor is a monolithic CMOS IC
integrating humidity and temperature sensor elements, an analog-to-digital
converter, signal processing, calibration data, and an I2C Interface. The patented
use of industry-standard, low-K polymeric dielectrics for sensing humidity enables
the construction of low-power, monolithic CMOS Sensor ICs with low drift and
hysteresis, and excellent long term stability.
The humidity and temperature sensors are factory-calibrated and the calibration
data is stored in the on-chip non-volatile memory. This ensures that the sensors
are fully interchangeable, with no recalibration or software changes required.
The Si7021 is available in a 3x3 mm DFN package and is reflow solderable. It can
be used as a hardware- and software-compatible drop-in upgrade for existing RH/
temperature sensors in 3x3 mm DFN-6 packages, featuring precision sensing
over a wider range and lower power consumption. The optional factory-installed
cover offers a low profile, convenient means of protecting the sensor during
assembly (e.g., reflow soldering) and throughout the life of the product, excluding
liquids (hydrophobic/oleophobic) and particulates.
The Si7021 offers an accurate, low-power, factory-calibrated digital solution ideal
for measuring humidity, dew-point, and temperature, in applications ranging from
HVAC/R and asset tracking to industrial and consumer platforms.
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