The HTU21D Temperature and Humidity Sensor Module is a low-cost, easy to use, highly accurate, digital humidity and temperature sensor. This sensor is ideal for environmental sensing and data logging and perfect for weather stations or humidor control systems. All you need is two lines for I2C communication and you will have relative humidity readings and very accurate temperature readings as a bonus!
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The HTU21D Temperature and Humidity Sensor Module is a low-cost, easy to use, highly accurate, digital humidity and temperature sensor. This sensor is ideal for environmental sensing and data logging and perfect for weather stations or humidor control systems. All you need is two lines for I2C communication and you will have relative humidity readings and very accurate temperature readings as a bonus!
There are only four pins that need to be hooked up in order to start using this sensor in a project. One for VCC, one for GND, and two data lines for I2C communication. This breakout board has built-in 4.7k pull-up resistors for I2C communications. If you are hooking up multiple I2C devices on the same bus, you may want to disable these resistors.
Note:Â Full drops of water can damage the sensor. We recommend wrapping the board in Teflon/irrigation tape for extreme conditions where water droplets may find their way into the sensor.
1 xHTU21D Temperature and Humidity Sensor Module.
1 x Set of Header. (Unsoldered)
| Power supply (V) | 1.5 ~ 3.6 |
| Humidity measure range | 0 100%RH |
| Humidity precision(10%RH to 95%RH) | HTU21DA 2%RH |
| Max. power consumption (W) | 2.7 |
| Communication | I2C |
| Measure time | 50 msec |
| Year drift | -0.5%RH/year |
| Response time | 5 sec |
| Length (mm) | 16 |
| Width (mm) | 16 |
| Height (mm) | 2.5 |
| Weight (gm) | 5 |
* Product Images are shown for illustrative purposes only and may differ from actual product.
Operating voltage | 2.5 3.0V |
Pixel Resolution | 0.3MP |
Photosensitive array | 640 x 480 |
Optical Size | 1.6 inch |
Angel of view | 67 degrees |
Maximum Frame Rate | 30fps VGA |
Sensitivity | 1.3V/(Lux-sec) |
Dormancy | Less than 20A |
Power consumption | 60mW/15fpsVGA YUV |
Temperature operation Range | -30 C ~ 70 C |
Pixel area | 3.6 x 3.6 m |
Signal to noise ratio (SNR) | 46 dB |
Dynamic range | 52 dB |
| Power supply (V) |
1.5 ~ 3.6 |
|---|---|
| Humidity measure range |
0 100%RH |
| Humidity precision(10%RH to 95%RH) |
HTU21DA 2%RH |
| Max. power consumption (W) |
2.7 |
| Communication |
I2C |
| Measure time |
50 msec |
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