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Home / Computer Hardware, Monitors & Peripherals / SHT40 Module, SHT40 Digital Temperature and Humidity Sensor Probe with IIC Interface, Replacement for SHT20 and SHT30

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Interface Protocol I²C (Two-Wire)
Operating Voltage 1.08V to 3.6V DC
Temperature Range -40°C to +125°C
Humidity Range 0% to 100% Relative Humidity
Temperature Accuracy ±0.1°C (typical)
Humidity Accuracy ±1.8% RH (typical)
Sensor Package DFN (2.5 x 2.5 x 0.9 mm³)
Pin Compatibility Drop-in for SHT20/SHT30
Power Consumption 1.5 µA (at 1 measurement per second)
Typical Application IoT, HVAC, Weather Monitoring

5 reviews

A

Anonymous

Apr 10, 2026

Rating: 5/5

Perfect Upgrade

Swapped out my old SHT30s for these. Accuracy is noticeably better and the response time is faster. Highly recommend for any precision logging project.

A

Anonymous

Mar 26, 2026

Rating: 4/5

Good Sensor, Small Pins

Works well but soldering the DFN package requires care if you are buying the bare sensor. The module version is much easier to handle.

A

Anonymous

Mar 12, 2026

Rating: 5/5

Great for Arduino Projects

Easy to wire up using the Adafruit library. Readings are consistent and stable even in fluctuating conditions. Good value for the price.

A

Anonymous

Mar 02, 2026

Rating: 5/5

Reliable Data

Using this in my greenhouse controller. Data is stable and hasn't drifted over the last three months of continuous operation.

A

Anonymous

Feb 09, 2026

Rating: 5/5

Fast Delivery

Module arrived well protected. Tested immediately against a calibrated reference and it was within spec. Will buy again.

5 FAQ

Q: Does this work with 5V logic microcontrollers?

A: Yes, but level shifting is recommended for the I²C lines to ensure long-term reliability when connecting to 5V boards.

Q: Is there an Arduino library available?

A: Yes, Sensirion provides official libraries, and it is also compatible with popular third-party SHT libraries.

Q: Can I use this sensor outdoors?

A: The sensor itself is robust but needs a proper enclosure to protect against direct rain and dust for outdoor use.

Q: What is the maximum sampling rate?

A: Configurable via software, typically up to 1Hz for low power modes, but can be higher depending on your power budget.

Q: Is it compatible with ESP32 boards?

A: Absolutely, works perfectly with ESP32 I²C pins. Just ensure you pull up the SDA and SCL lines correctly.

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