Gravity - UV ultraviolet light sensor - LTR390-UV-01 - I2C/UART - DFRobot SEN0540

Index: DFR-22672 EAN: 6959420923175
Ultraviolet UV light sensor manufactured by DFRobot. It is equipped with the LTR390-UV-01 system that allows the measurement of radiation with a wavelength in the range from 280 nm to 430 nm. It features high sensitivity, fast response time and strong anti-interference ability. The module is equipped with a Gravity connector, which allows for easy and quick integration with other devices. There is also an ADC converter on the board, which enables communication via two interfaces: UART and I2C. Powered with voltage in the range from 3.3 V to 5 V.
Gravity - UV ultraviolet light sensor - LTR390-UV-01 - I2C/UART - DFRobot SEN0540
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Manufacturer: DFRobot
Compatibility: Arduino

Product description: Gravity - UV ultraviolet light sensor - LTR390-UV-01 - I2C / UART - DFRobot SEN0540

Ultraviolet UV light sensor manufactured by DFRobot. It is equipped with the LTR390-UV-01 system that allows the measurement of radiation with a wavelength in the range from 280 nm to 430 nm. It features high sensitivity, fast response time and strong anti-interference ability. The module is equipped with a Gravity connector, which allows for easy and quick integration with other devices. There is also an ADC converter on the board, which enables communication via two interfaces: UART and I2C. Powered with voltage in the range from 3.3 V to 5 V.

Arduino compatible product

A detailed user guide is available on the manufacturer's website - check it out!

Gravity - UV ultraviolet light sensor - LTR390-UV-01 - I2C / UART - DFRobot SEN0540.

UV ultraviolet light sensor from DFRobot.

Characteristics of the module

  • Equipped with the LTR390-UV-01 system for measuring ultraviolet radiation and visible light
  • Equipped with ADC converter
  • It uses I2C and UART buses to communicate with main modules and peripheral devices
  • It allows the measurement of radiation with a wavelength from 280 nm to 430 nm
  • The effective measurement resolution ranges from 13 bits to 20 bits
  • The adjustable range of the module gain is: 1, 3, 6, 9 and 18
  • The spectral response of the sensor is similar to the human eye

Suggested use

  • UV intensity detection
  • Light intensity detection
  • Weather experiments for teaching purposes
  • Light detection experiments
  • UV index monitoring devices
  • Devices for external UV detection

Pinout description and connection diagram

  • Red line - VCC - 5 V power pin
  • Black line - GND - system ground
  • Blue line - SDA - data line of the I2C interface
  • Green line - SCL - I2C interface clock line
Example connection diagram.

An exemplary connection diagram using the I2C bus.

Components included in the set.

Components included in the set.

Sensor technical specification

  • Module type: UV ultraviolet and visible light sensor
  • Layout: LTR390-UV-01
  • Measurement range:
    • ALS: from 450 nm to 700 nm
    • UV: from 280 nm to 430 nm
  • Supply voltage: 3.3 V to 5 V DC
  • Operating current: about 2.73mA
  • Communication interface: I2C and UART
  • Output type: digital output
  • Dimensions: 32x27mm

Kit Contents

  • UV ultraviolet light sensor
  • Cable with Gravity connector
Sensor - type lights
Niebezpieczne Component
Package width 6 cm
Package height 5.5 cm
Package depth 2.5 cm
Package weight 0.013 kg

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Product reviews

Gravity - UV ultraviolet light sensor - LTR390-UV-01 - I2C/UART - DFRobot SEN0540

4.5/5

Average grade

4

Customers opinion
The following opinions are collected
and verified by
an external partner Trustmate
and come from the post-purchase process.
Michal 23.07.2026 Confirmed purchase Translated review
The sensor itself is very cool, but this module works differently than the standard LTR390 UV [via I2C] and it's hard to connect it, for example, to ESP
Remy 30.08.2024 Confirmed purchase
Kamil 13.11.2024 Confirmed purchase
Matthias 12.07.2024 Confirmed purchase

Instructions and documents

Certyfikat RoHS

Product Information

The product is a component intended for further assembly/prototyping. It does not constitute a standalone finished product within the meaning of product safety regulations.

Dane GPSR

Country of Origin: China

Manufacturer Contact Details: Zhiwei Robotics Corp. Unit 01, 26/F, A1 Shanghai T & I Tower, No. 1699 Zhongke Road, Pudong District, Shanghai, P.R.China [email protected]

EU Marketer Contact Details: BOTLAND B. DERKACZ SP. K. Gola 25A - 63-640 Bralin [email protected]

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