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GY21 BMP280 GY-213V CJMCU-8128 CCS811 BMP280 Temperature Humidity Module Sensor
GY21-SI7021 / GY-213V-Si7021
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% RH operating range
Up to –40 to 125 °C operating range
Wide operating voltage (1.9 to 3.6 V)
Low Power Consumption 150 ÎĽA 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
Package Included:1 x GY21-SI7021 / GY-213V-Si7021 SI7021 SensorSpecifications
1. Operating voltage: 1.9-3.6V (recommended 3.3V)
2. Standby current: 60nA
3. Temperature range: -40 - 85 ? (Recommended -10 - 60 ?)
4. Temperature accuracy: ± 0.4 ? (-10 - 85 ?)
5. Humidity range: 0-100% RH (recommended 20% - 80% RH)
6. Humidity Accuracy: ± 3% RH (0-80% RH)
7. Temperature conversion time: 7ms
8. Humidity conversion time: 17ms (temperature conversion will occur automatically when the humidity conversion)
9. Interface Type: I2C 2.54mm pad pitch
10. Module size: 8.5*10mm Package Included:
1 x MINI Si7021 Temperature and Humidity Sensor BMP280 SI7021Description:The GY-21P Atmospheric Sensor Breakout is the easy way to measure barometric pressure, humidity, and temperature readings all without taking up too much space. Basically, anything you need to know about atmospheric conditions you can find out from this tiny breakout. The GY-21P Breakout has been design to be used in indoor/outdoor navigation, weather forecasting, home automation, and even personal health and wellness monitoring.
The on-board BMP280 SI7021 sensor measures atmospheric pressure from 30kPa to 110kPa as well as relative humidity and temperature.
BMP280
Druckbereich: 300-1100 hPa (9000 Meter ĂĽber dem Meeresspiegel auf -500m)
Relative Genauigkeit (bei 950 - 1050 hPa bei 25°C): ±0.12 hPa, equiv. zu ±1 m
Absolute Genauigkeit (bei (950 - 1050 hPa, 0 - 40 °C): ±0.12 hPa, equiv. zu ±1 m
Netzspannung: 1,8 V - 3,6 V
Stromverbrauch: 2,7µA bei 1Hz Ausleserate
Temperaturbereich: -40 bis 85°C
SI7021
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
Size: 1.3*1cm/0.51*0.39"Features:Operation Voltage: 3.3V
I2C & SPI Communications Interface
Temp Range: -40C to 85C
Humidity Range: 0 - 100% RH, =-3% from 20-80%
Pressure Range: 30,000Pa to 110,000Pa, relative accuracy of 12Pa, absolute accuracy of 100Pa
Altitude Range: 0 to 30,000 ft (9.2 km), relative accuracy of 3.3 ft (1 m) at sea level, 6.6 (2 m) at 30,000 ft.
Incredibly Small Package Included:1 GY-21P I2C & SPI Humidity Temperature Atmospheric Sensor Breakout BMP280 SI7021 CCS811 SI7021 BMP280Description:
CJMCU-8128 CCS811 SI7021 BMP280 Carbon Dioxide Temperature Humidity 3in1 module
Module size: 15mm*21mm
Power supply: 3.3V
CJMCU-8128 a gas sensor chip system chip (SSoC) temperature and humidity sensor, using low-power sensing technology to detect indoor volatile organic compounds (VOCs).
From CCS811 CJMCU8118 board schematic structure of the figure we can see that this is not a simple sensor, it has integrated MCU, the sensor has an onboard processing capability, without host intervention, can provide the equivalent level of carbon dioxide or total volatile organic compounds (TVOC) index. At the same time, with the use of separate gas sensors and MCU solutions, CCS811 can save equipment inventory costs as well as up to 60% of the total area of the board.The Si7021 is a digital relative humidity and temperature sensor.
This monolithic CMOS IC integrates humidity and temperature sensor components, analog-to-digital converters, signal processing, calibration data, and I2C host interface.
The humidity and temperature sensors are factory calibrated and the calibration data is stored in the on-chip nonvolatile memory.
It is available in a 3mm x 3mm DFN package and reflowable.BMP280 is an absolute pressure sensor designed specifically for mobile applications. The sensor module is housed in a very compact package. Its small size and low power consumption allow the implementation of such devices in battery powered mobile phones, GPS modules or watches.
BMP280 is based on BOSCH's proven piezoresistive pressure sensor technology with high accuracy, linearity and long-term stability and robustness of electromagnetic compatibility. Many device operating options offer the highest flexibility, optimized power dissipation, resolution and filter performance. A test example is used in the case that the default setting is for developers in order to make the design as simple as possible.
application
GPS enhanced navigation (e.g. time pre improvement, dead reckoning, slope detection)
Indoor navigation (ground detection, elevator detection)
Outdoor navigation, leisure and sports applications
Weather forecast
Application of health care (e.g. spirometry)
Vertical speed indicator (e.g. rising or sinking speed)

Package included:
1 x CJMCU-8128 CCS811 SI7021 BMP280 Carbon Dioxide Temperature Humidity 3in1 modulePayment
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