SHT40:

This Grove SHT40 digital sensor is based on Sensirion's industry-proven humidity and temperature sensors. It can provide constant temperature and humidity accuracy over an extensive measurement range, making it the best price/performance ratio available. And with the grove platform, you are ready to plug and play the SHT4x sensor on any microcontroller (Arduino) or microprocessor (Raspberry Pi).

The Grove-SHT40 digital 4th generation sensor comprises an entirely new and optimized CMOSens® chip, offering lower power consumption, which makes it highly suitable for low-power and battery-supported applications. It has an operating temperature range of -40°C to +125°C, an excellent 1.8% typical relative humidity accuracy from 25 to 75%, and a 0.2 °C typical accuracy from 0 to 75 °C.
The fully calibrated Grove-SHT40 sensor offers linearized digital output and NIST traceability. And our standard Grove four-pin I2C interface makes it easy to read or communicate with integrated circuits.
Due to the high accuracy of the SHT40 sensor and the compatibility of our grove system, Grove-SHT40 is perfect for high-end industrial applications, projects for hobbyists, learning projects for beginners, etc.

SHT41:

This Grove-SHT4x digital sensor is based on Sensirion's industry-proven humidity and temperature sensors. It can provide constant temperature and humidity accuracy over an extensive measurement range, making it the best price/performance ratio available. And with the grove platform, you are ready to plug and play the SHT4x sensor on any microcontroller (Arduino) or microprocessor (Raspberry Pi).

The Grove-SHT4x digital 4th generation sensor comprises an entirely new and optimized CMOSens® chip, offering lower power consumption, a voltage supply 5/3.3 volts, and up to 32µA of idle current, which makes it highly suitable for low-power and battery-supported applications. It has an operating temperature range of -40°C to +125°C, an excellent 1.8% typical relative humidity accuracy from 25 to 75%, and a 0.2 °C typical accuracy from 0 to 75 °C.
The fully calibrated Grove-SHT4x sensor offers linearized digital output and NIST traceability. And our standard Grove four-pin I2C interface makes it easy to read or communicate with integrated circuits.
Due to the high accuracy of the SHT4x sensor and the compatibility of our grove system, Grove-SHT4x is perfect for high-end industrial applications, projects for hobbyists, learning projects for beginners, etc.
SHT4x support ESPhome, which is an open-source project to help you customize smart home solutions based on popular ESP32/ESP8266 boards. We've provided a Selection Guide for Grove Temperature and Humidity Sensors that support ESPHome. It will help you choose the sensor that best suits your needs.

Features:

SHT40 :

Accuracy Rate: It has relative humidity and temperature accuracy rate of up to ±1.8% RH and ±0.2 °C, respectively.
Extended operating ranges: The sensor can operate between 0 and 100% RH and -40 and 125°C.
Condensing environments: Fully functional in condensing or environment close to saturation. (with a variable power heater)
Serial Protocol: Grove I2C interface with an ultra-low-power budget, standard, fast mode, and fast mode plus l2C address sensor.
Stress-Test-Driven Qualification: SHT4x sensor is JEDEC JESD47 qualified.

SHT41

Accuracy Rate: It has relative humidity and temperature accuracy rate of up to ±1.8% RH and ±0.2 °C, respectively.

Extended operating ranges: The sensor can operate between 0 and 100% RH and -40 and 125°C.

Grove average current: An average current of 1.2 µA and idle up to 32µA.

Grove power supply: Power supply voltage of 5v/3.3v.

Condensing environments: Fully functional in condensing or environment close to saturation. (with a variable power heater)

Stress-Test-Driven Qualification: SHT4x sensor is JEDEC JESD47 qualified

Caution:

A stress level above the specified range can permanently damage the device. The above is only stress ratings, and the functional operation of the device is not guaranteed under these conditions.

Typical and maximal relative humidity accuracy at 25°C (SHT40)