Attributes

Brand	-
Category	Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin	-
Interface	I²C (Inter-Integrated Circuit)
Supply Voltage	1.71V to 5.5V
Temperature Range	-40°C to +125°C
Humidity Range	0% to 100% RH
Temperature Accuracy	±0.2°C (typical)
Humidity Accuracy	±1.8% RH (typical)
Package Type	DFN Package with Probe Cable
Module Dimensions	20mm x 15mm x 5mm
Compatibility	Arduino, Raspberry Pi, ESP32
Communication Protocol	Standard I²C up to 1 MHz

5 reviews

Anonymous

Mar 16, 2026

Rating: 5/5

Perfect for climate monitoring

Using this in my automated greenhouse setup. Humidity readings match my calibrated hygrometer perfectly.

Anonymous

Mar 15, 2026

Rating: 3/5

Works but docs are sparse

The module itself is fine but I had to search online for the right library examples.

Anonymous

Mar 11, 2026

Rating: 5/5

Excellent accuracy for IoT projects

Swapped my old SHT30 for this. The response time is noticeably faster and the readings are stable.

Anonymous

Feb 05, 2026

Rating: 4/5

Good sensor, careful with wiring

Works great once connected properly. The pins are small so make sure you have a good soldering iron.

Anonymous

Jan 27, 2026

Rating: 5/5

Best in class for price

Low power consumption and high reliability. Highly recommend for battery powered nodes.

5 FAQ

Q: Does this work with 3.3V logic?

A: Yes, the SHT40 supports voltage ranges from 1.71V to 5.5V.

Q: How long is the probe cable?

A: The standard module comes with a 10cm cable, but custom lengths are available upon request.

Q: Is calibration required out of the box?

A: No, each sensor is individually calibrated at the factory before shipping.

Q: Can I change the I2C address?

A: No, the I2C address is hardcoded in the sensor chip according to the datasheet.

Q: Is there a library available for Arduino?

A: Yes, the Sensirion SHT4x library is compatible and available in the Arduino Library Manager.

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