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HTU21D Temperature Humidity Sensor
Specification：
- Supply Voltage: 1.5V-3.6
- Humidity Measuring Range: 0-100% RH
- Communication: I2C
- Response Time: 5 s
- Temperature Measuring Range: -40 ℃—105℃
- Maximum Power Consumption: 2.7uW
- Humidity Accuracy Range (10% RH to 95% RH): HTU21D ± 2% RH
- Humidity Hysteresis: ± 1% RH
- Measurement Time: 50ms
- In Drift: -0.5% RH / Year
Package Contents:
- 3x HTU21D Temperature Humidity Sensor
Features:
- HTU21D Sensor is a Low-Cost, Highly Accurate, Digital Humidity and Temperature Sensor,Easy to Use
- HTU21D Sensor is Ideal for Environmental Sensing and Data Logging and Perfect for a Weather Stations or Humidor Control Systems
- Four Pins: 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’re Hooking Up Multiple I2C Devices On the Same Bus, You May Want to Disable These Resistors
Kael Fischer
Reviewed in the United States on July 25, 2024
Sadly, all 3 units were Dead On Arrival. Tested on 3 different ESP32 (S2 and S3) boards, all running a modern version of CircuitPython. Positive control is my old trusty SHT21 breakout, which works fine on all setups.
N6AC
Reviewed in the United States on November 18, 2024
Required a bit of soldering to convert the stock setup to allow plug-in replacement by these fine little devices.Works great, provides same accuracy as the replaced defunct sensor.Recommended!
T-GroveBob
Reviewed in the United States on April 2, 2024
The temperature/Humidity board in my Acurite Iris failed ( -40 reading) and when I looked at the replacement it was over $30 with shipping to get this postage stamp of a sensor from Acurite. This worked just fine as a replacement with a little solder work. Just be sure to pay attention to the fact that the power pins are swapped. On the Acurite board it is Minus, Plus, Data, Clock while on this board it is Plus, Minus, Data, Clock. Saved $20 and still have two spares.
Kassandra S.
Reviewed in the United States on November 7, 2023
I used one of these to replace the sensor in my weather station that has gone bad… Very expensive… Worked fine… Just be advised they are very tiny and require soldering
Artem
Reviewed in the United States on November 24, 2023
Works for Acurite Iris old version where temperature/humidity sensor is not replaceable. Had to resolder module and slightly adjust wiring since CL/DA and VSS/VDD are swapped on this module comparing to Acurite Iris
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