Sensirion SHT40I-HD1F-R2 Humidity & Temperature Sensor - I2C Interface, NIST-Traceable
Sensirion SHT40I-HD1F-R2 Humidity & Temperature Sensor - I2C Interface, NIST-Traceable - Image 2
SKU: SENS-3489
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Sensirion SHT40I-HD1F-R2 Humidity & Temperature Sensor - I2C Interface, NIST-Traceable

₹379.00 (Inclusive of all taxes)
Out of Stock

The Sensirion SHT40I-HD1F-R2 is an industrial-grade digital humidity and temperature sensor featuring an I2C interface for direct integration with microcontrollers like Arduino, Raspberry Pi, ESP32, and STM32. It delivers high-accuracy environmental data with NIST-traceable calibration for reliable monitoring in demanding applications.

Features

  • High Accuracy Sensing: ±2.5% RH and ±0.3°C typical measurement accuracy.
  • Fast Digital I2C Interface: Enables quick system integration and data retrieval.
  • Wide Operating Range: Functions from -40°C to +125°C and 0–100% RH.
  • Industrial-Grade Reliability: Features ESD protection (2 kV HBM) and robust construction.
  • NIST-Traceable Calibration: Each unit is individually calibrated per ISO/IEC 17025 standards.

Out of stock

Description

The SHT40I-HD1F-R2 from Sensirion utilizes a proven CMOSens® technology chip for precise capacitive humidity and bandgap temperature sensing. This digital sensor communicates via a standard I2C interface, providing calibrated, temperature-compensated data directly to the host system, eliminating the need for external signal conditioning.

Engineered for harsh environments, it operates across an extended temperature range from -40°C to 125°C and offers excellent long-term stability. Its integrated design includes robust ESD protection, making it suitable for industrial process control, HVAC systems, data loggers, and other embedded applications requiring dependable environmental data.

Key Features

  • High-Accuracy Digital Sensor: Delivers typical accuracy of ±2.5% RH and ±0.3°C.
  • Fast Response Time: Achieves 4 seconds for humidity and 2 seconds for temperature measurements.
  • Wide Supply Voltage Range: Operates from 2.3V to 5.5V, compatible with 3.3V and 5V logic systems.
  • Industrial Durability: Protected against electrostatic discharge up to 2 kV (HBM).
  • Fully Calibrated Output: Provides NIST-traceable, digital I2C output for both humidity and temperature.
  • Low Power Consumption: Optimized for energy-efficient continuous monitoring applications.
  • Compact DFN Housing: Small-footprint package suitable for space-constrained designs.

Applications

  • Industrial HVAC and building automation for climate control.
  • Precision environmental monitoring in data centers and server rooms.
  • Embedded sensing in portable data loggers and IoT devices.
  • Process control and condition monitoring in manufacturing equipment.
  • Agricultural and greenhouse climate management systems.

Technical Specifications

Manufacturer Part NumberSHT40I-HD1F-R2
Sensor TypeDigital Humidity & Temperature
Humidity Range0 to 100% RH
Humidity Accuracy±2.5% RH (typical)
Temperature Range-40°C to +125°C
Temperature Accuracy±0.3°C (typical)
Supply Voltage2.3V to 5.5V DC
Communication InterfaceI2C Digital
Response Time (Ï„ 63%)4 s (RH), 2 s (Temperature)
ESD Protection2 kV HBM
CalibrationNIST-traceable, individual per ISO/IEC 17025
Operating Current0.5 µA (avg. @ 1 measurement per second)
Package TypeDFN

Frequently Asked Questions

What is the supply voltage range for the SHT40I-HD1F-R2 sensor?

The SHT40I-HD1F-R2 operates from a wide supply voltage range of 2.3V to 5.5V DC. This makes it directly compatible with both 3.3V and 5V microcontroller systems like Arduino, Raspberry Pi, and ESP32 without requiring a level shifter.

How do I communicate with this sensor? What is the pinout?

Communication is via a standard I2C interface. The typical 4-pin connection includes VDD (power), GND (ground), SDA (data line), and SCL (clock line). You must use pull-up resistors on the SDA and SCL lines as per I2C protocol specifications for reliable communication.

What does 'NIST-traceable calibration' mean for this sensor?

Each SHT40I-HD1F-R2 unit is individually calibrated against reference standards in an ISO/IEC 17025 accredited laboratory, with the calibration chain traceable to the National Institute of Standards and Technology (NIST). This ensures high measurement confidence and is often required for industrial quality control and regulatory applications.

Is this sensor suitable for outdoor or harsh environments?

Yes, its industrial-grade design includes an operating temperature range of -40°C to 125°C and robust ESD protection. However, for prolonged outdoor use, it must be properly housed to protect the sensing element from direct water exposure, condensation, and contaminants, as the DFN package itself is not fully sealed.

Package Includes

  • 1 x Sensirion SHT40I-HD1F-R2 Humidity & Temperature Sensor

Additional Information

Weight 0.005 kg
Dimensions 0.8 × 0.2 cm

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