SKU: SENS-3432
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Generic GY-SHT40 Digital Temperature and Humidity Sensor - I2C Interface

₹219.00 (Inclusive of all taxes)
Out of Stock

The GY-SHT40 is a high-precision digital temperature and humidity sensor module compatible with I2C communication, designed for seamless integration into microcontroller platforms like Arduino, ESP32, and Raspberry Pi for environmental monitoring and data logging applications.

Features

  • High accuracy sensing with ±0.2°C temperature and ±1.8% RH humidity precision.
  • Digital I2C interface for straightforward connection to microcontrollers and SBCs.
  • Ultra-low power consumption ideal for portable and battery-powered devices.
  • On-chip factory calibration ensures reliable, ready-to-use measurements.
  • Compact, unwelded module footprint for easy PCB integration.

Out of stock

Description

The GY-SHT40 digital sensor utilizes a capacitive polymer sensing element for humidity and a band-gap sensor for temperature, delivering calibrated digital signals via a standard I2C interface. Its integrated signal conditioning and on-chip memory for calibration coefficients guarantee high measurement accuracy across its full operating range without requiring user calibration.

Engineered for stability and low drift, this sensor is suitable for long-term monitoring applications. Its wide supply voltage range and minimal power draw make it an optimal choice for embedded systems, IoT nodes, and portable instrumentation where precision and energy efficiency are critical.

Key Features

  • High-precision capacitive humidity sensing with ±1.8% RH accuracy.
  • Accurate temperature measurement with ±0.2°C typical deviation.
  • Fully calibrated digital output via I2C communication protocol.
  • Ultra-low power consumption for extended operation in battery-powered designs.
  • Wide operating voltage range from 1.08V to 3.6V DC for 3.3V logic compatibility.
  • Compact surface-mount module with a footprint of 13.2mm x 10.4mm.
  • Broad operating temperature range from -40°C to +125°C.
  • On-chip factory calibration for immediate, accurate deployment.

Applications

  • Precision environmental monitoring in HVAC and building automation systems.
  • Data logging for weather stations and portable meteorological instruments.
  • Condition monitoring in industrial automation and process control.
  • IoT sensor nodes for smart home and agricultural monitoring systems.
  • Battery-operated portable devices requiring low-power climate sensing.

Technical Specifications

Item TypeSensor
Model NumberGY-SHT40
Supply Voltage (VDC)1.08 to 3.6
Temperature Range-40°C to 125°C
Temperature Accuracy±0.2°C
Humidity Range0% to 100% RH
Humidity Accuracy±1.8% RH
Output InterfaceI2C
Length13.2 mm
Width10.4 mm
Weight3 g

Frequently Asked Questions

What is the communication protocol for the GY-SHT40 sensor?

The GY-SHT40 sensor communicates exclusively via the I2C (Inter-Integrated Circuit) protocol. It uses a standard two-wire interface (SCL and SDA) for digital communication with microcontrollers like Arduino, ESP32, or Raspberry Pi, simplifying integration and data reading.

What is the operating voltage range for this sensor?

The sensor operates from 1.08V to 3.6V DC. This range makes it directly compatible with 3.3V logic systems commonly found on development boards. It is not designed for 5V operation without a level shifter.

Does the sensor require any external calibration?

No, the GY-SHT40 module comes with on-chip factory calibration. The calibration coefficients are stored in the sensor's internal memory, providing accurate temperature and humidity readings out of the box without requiring user calibration.

What is the physical size and mounting type of this module?

This is an unwelded, surface-mount device (SMD) module with compact dimensions of 13.2mm (L) x 10.4mm (W). It is designed for direct soldering onto a PCB and does not include a breakout board or header pins.

Package Includes

  • 1 x Unwelded GY-SHT40 Digital Temperature and Humidity Sensor Module

Additional Information

Weight 0.003 kg
Dimensions 1.32 × 1.04 cm