SKU: SENS-2920
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DFRobot Gravity UV Index Sensor (240-370nm, UVA, UVB, UVC) - I2C/UART

₹1,049.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Gravity UV Index Sensor provides direct measurement of ultraviolet radiation across the 240-370nm spectrum (UVA, UVB, UVC). It outputs real-time UV index (0-11) and harm level (1-5) data via I2C or UART, making it compatible with Arduino, Raspberry Pi, ESP32, and other 3.3V/5V microcontroller platforms for environmental and health monitoring applications.

Features

  • Measures UV radiation across the full 240-370nm spectrum (UVA, UVB, UVC).
  • Directly outputs calibrated UV Index (0-11) and Harm Risk Level (1-5).
  • Dual communication interfaces: I2C and UART for flexible system integration.
  • Wide operating voltage range from 3.3V to 5V DC.
  • Robust operating temperature range from -30°C to 80°C.

Out of stock

Description

The DFRobot Gravity UV Index Sensor utilizes a high-performance UV-sensitive photodiode to detect ultraviolet radiation across the critical 240-370nm wavelength range. This covers the biologically significant UVA, UVB, and UVC bands, with a particular focus on UVB for accurate skin health risk assessment. The onboard signal conditioning and processing circuitry directly converts the raw sensor data into standardized outputs, eliminating the need for complex user-side calculations.

Designed for reliability in varied environments, the sensor operates from -30°C to 80°C and features the standard Gravity-series PH2.0 connector for easy plug-and-play connectivity. Its dual I2C and UART interfaces provide maximum compatibility with data acquisition systems, from educational Arduino setups to industrial-grade environmental monitoring stations, enabling precise tracking of UV exposure for health, agricultural, and energy applications.

Key Features

  • Broad-spectrum UV detection from 240nm to 370nm.
  • Onboard processing for direct UV Index and Harm Level output.
  • Flexible I2C and UART digital communication protocols.
  • Wide 3.3V to 5V operating voltage compatibility.
  • Extended operational temperature range (-30°C to 80°C).
  • High-quality UV sensor chip for stable, repeatable measurements.
  • DFRobot Gravity-series connector for simplified wiring.
  • Compact form factor suitable for portable and fixed installations.

Applications

  • Personal UV exposure monitoring and skin health risk assessment devices.
  • Environmental stations for tracking UV pollution and solar radiation intensity.
  • Agricultural systems monitoring UV light for plant growth and pest control.
  • Solar panel performance optimization based on incident UV radiation levels.
  • Laboratory research and educational projects involving ultraviolet light measurement.

Technical Specifications

Sensor TypeUV Index Sensor
UV Wavelength Range240 - 370 nm
Measured BandsUVA, UVB, UVC
Output DataUV Index (0-11), Harm Risk Level (1-5)
Communication InterfaceI2C, UART
Operating Voltage3.3V - 5V DC
Current Consumption~5 mA
Operating Temperature-30°C to 80°C

Frequently Asked Questions

What is the operating voltage range for this UV sensor?

The sensor operates on a wide voltage range from 3.3V to 5V DC, making it directly compatible with most common microcontroller platforms like Arduino (5V), Raspberry Pi (3.3V), ESP32, and STM32 without requiring a logic level shifter.

How do I communicate with the sensor? What are the pinouts?

The module supports both I2C and UART (serial) communication protocols. Using the included PH2.0-4P cable, the standard pinout is: Red (VCC), Black (GND), Blue (TX/RXD for UART), Yellow (RX/TXD for UART) or (SDA for I2C), and White (SCL for I2C). The default I2C address is 0x38.

What does the sensor output directly?

The sensor outputs two primary values: a calibrated UV Index from 0 to 11 (following the standard scale) and a Harm Risk Level from 1 to 5, which indicates the potential health risk from the measured UV exposure. No manual calculation or conversion is required.

Can this sensor measure UVC radiation?

Yes, the sensor's photodiode is sensitive across the 240-370nm spectrum, which includes the UVC band (100-280nm), UVB (280-315nm), and UVA (315-400nm). It is particularly focused on providing accurate readings in the UVB range, which is most relevant for skin health and the standard UV Index calculation.

Package Includes

  • 1 x DFRobot Gravity UV Index Sensor
  • 1 x PH2.0-4P Connecting Cable

Additional Information

Weight 0.02 kg
Dimensions 6 × 5 × 2 cm