GY-213v-HTU21D Temperature and Humidity Sensor
$3.271pcs
The HTU21D sensor module features a compact size, allowing it to be installed on almost any device, such as thermostats, humidistats, indoor weather stations, and similar equipment, for monitoring and controlling temperature/humidity.
| Dimensions | 15.3 × 15.3 mm |
|---|---|
| Brand |
easyelecmodule |
3662 in stock
Product Introduction
GY-213v-HTU21D is a high-precision, low-power digital temperature and humidity sensor module, known for its strong compatibility and high ease of use. It can directly replace similar sensors such as SHT15, SHT21, and SI7021. Utilizing the I2C two-wire communication protocol, it only requires VCC, GND, and two data lines to establish a connection. The module also features a built-in 4.7K pull-up resistor, making it suitable for multi-device bus connection scenarios.
Its key performance parameters are outstanding: the operating voltage range is 1.5V to 3.6V, the temperature measurement range covers -40°C to 105°C (with some specifications reaching 125°C), with an accuracy of up to ±0.2°C. The humidity measurement range is 0% to 100% RH, with an accuracy of ±2%. It also boasts a 14-bit measurement resolution and an ultra-low power consumption of only 2.7µW. The module is packaged in a compact 3.00×3.00mm DFN6 format, facilitating easy integration and installation.
This product is widely applicable across various scenarios, including smart home environmental monitoring, industrial automation temperature and humidity compensation, medical equipment monitoring (such as ventilators and oxygen generators), agricultural greenhouse regulation, wearable health devices, and systems like weather stations or cigar humidor controls—essentially any scenario requiring real-time temperature and humidity data collection.
Product parameters
- Relative humidity accuracy: ±2% (typical value)
- Temperature accuracy: ±2°C (typical value)
- Good stability under high humidity conditions
- 14-bit measurement resolution
- Sleep mode current: 0.02uA
- GY-213V-HTU21D supply voltage: 3.3V
Product Features
- High-precision measurement: The sensor can provide high-precision temperature and humidity measurement data. The humidity measurement accuracy reaches up to ±2%RH, and the temperature measurement accuracy reaches up to ±0.3°C, meeting the accuracy requirements for temperature and humidity measurement in most application scenarios.
- Digital Output: Utilizes an I2C digital interface for communication, facilitating connection with various microcontrollers. No additional analog-to-digital conversion circuits are required, simplifying circuit design.
- Low power consumption: Consumes minimal power during measurement, making it suitable for battery-powered applications and extending device battery life.
- Fast Response: Capable of quickly responding to changes in ambient temperature and humidity, providing accurate measurement data in real time.
- Long-term stability: Excellent long-term stability ensures that measurement accuracy does not experience significant drift over extended periods of use.
Pin Definition
| HTU21D Module Pins | Description |
|---|---|
| 3.3V | Connect to the 3.3V pin of Arduino |
| GND | Grounding pin that provides a common ground between devices |
| SCL | Serial clock pin for generating clock signals |
| SDA | Serial data pin used for sending and receiving data |
Product Dimensions
Environmental factors affecting sensor performance
The HTU21D sensor may lose accuracy in extremely high or low temperature and humidity environments.For example,rapid temperature changes can cause temporary deviations in sensor readings from the true values,a phenomenon known as”temperature drift.”Similarly,condensation in high-humidity environments can also affect the normal operation of the sensor.
- Use Protective Housing:Apply a protective cover externally on the sensor to prevent rapid temperature changes and condensation.
- Temperature and Humidity Control:Strive to maintain a stable and suitable temperature and humidity environment around the sensor whenever possible.
- Data Post-processing:Use software algorithms to calibrate the data and eliminate errors that may be introduced by environmental factors.
Relative Information
Apllication
Intelligent Building HVAC System Environmental Compensation.
Cold Chain Transportation Recorder.
Industrial Gateway or PLC Cabinet Temperature Monitoring.
Internal Environment Sensing of Medical Devices.
Shipping Cost
We only ship to the United States. Shipping costs are calculated based on the total order amount.
Shipping Method And Delivery Time
All orders will be processed and shipped within 72 hours of placing the order (excluding weekends and holidays). They will ship from Shenzhen, China, primarily via 4PX logistics. Depending on the destination and logistics conditions, other carriers such as DHL, FedEx, UPS, USPS, etc., may also handle the delivery. Estimated shipping time is 7-12 business days, with actual delivery occurring in 10-17 business days, depending on logistics conditions.
Payment:
We accept Visa, Master card, Maestro, American Express, JCB, Dinner's Club, Discover, Paypal, Apple Pay, Google Pay .
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