DFRobot Gravity GUVA-S12SD Analog UV Light Sensor (200-370nm, UVA, UVB, UVC) - Module w/ Cable
DFRobot Gravity GUVA-S12SD Analog UV Light Sensor (200-370nm, UVA, UVB, UVC) - Module w/ Cable - Image 2
DFRobot Gravity GUVA-S12SD Analog UV Light Sensor (200-370nm, UVA, UVB, UVC) - Module w/ Cable - Image 3
DFRobot Gravity GUVA-S12SD Analog UV Light Sensor (200-370nm, UVA, UVB, UVC) - Module w/ Cable - Image 4
DFRobot Gravity GUVA-S12SD Analog UV Light Sensor (200-370nm, UVA, UVB, UVC) - Module w/ Cable - Image 5
SKU: SENS-2900
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DFRobot Gravity GUVA-S12SD Analog UV Light Sensor (200-370nm, UVA, UVB, UVC) - Module w/ Cable

₹619.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Gravity GUVA-S12SD is an analog ultraviolet light sensor module covering the 200–370nm spectrum (UVA, UVB, and partial UVC). It provides a linear analog voltage output proportional to UV intensity, making it directly compatible with Arduino, Raspberry Pi, and other 3.3V/5V microcontroller platforms for environmental monitoring and UV index measurement.

Features

  • Broad UV spectrum detection from 200 to 370 nanometers.
  • Linear analog voltage output for direct ADC interfacing.
  • Wide operating voltage range from 3.3V to 5.5V DC.
  • Compact PCB module with plug-and-play Gravity connector.
  • Complies with WHO UV index grading standards for direct interpretation.

Out of stock

Description

The GUVA-S12SD sensor utilizes a specialized photodiode sensitive to ultraviolet wavelengths, converting incident UV radiation into a proportional analog voltage signal. This linear output simplifies calibration and integration with microcontroller analog-to-digital converters (ADCs) for precise intensity measurement.

Designed for robustness, the module operates across an extended temperature range from -25°C to 85°C, ensuring reliable performance in both indoor and outdoor environmental monitoring applications. Its compact form factor and low power consumption make it suitable for portable, battery-powered UV monitoring systems.

Key Features

  • Broadband UV Photodiode: Sensitive across UVA, UVB, and partial UVC bands (200-370nm).
  • Linear Analog Interface: Outputs a 0-Vcc voltage directly proportional to UV irradiance.
  • Wide Supply Voltage: Compatible with 3.3V and 5V logic systems (3.3V to 5.5V DC).
  • Extended Operational Range: Rated for -25°C to 85°C ambient temperature.
  • Standardized Output: Calibrated to align with World Health Organization (WHO) UV index scales.
  • Gravity Connector System: Enables quick, solderless connection to DFRobot expansion boards.
  • Compact & Lightweight Design: PCB dimensions of 25mm x 30mm for space-constrained installations.

Applications

  • Portable UV index meters and environmental monitoring stations.
  • UV lamp intensity verification and aging detection in sterilization systems.
  • Agricultural research monitoring UV exposure for plant growth and stress.
  • Wearable devices for personal sun exposure tracking and alerts.
  • Industrial process control requiring UV light intensity feedback.

Technical Specifications

Manufacturer Part NumberGUVA-S12SD
Operating Voltage3.3V to 5.5V DC
Detection Wavelength Range200 nm to 370 nm
Output SignalAnalog Voltage
Operating Temperature-25°C to 85°C
Module Dimensions (L x W)30 mm x 25 mm
Module Weight4 g
InterfaceDFRobot Gravity 3-Pin Analog
Primary ApplicationsUV Index Monitoring, Environmental Sensing, Plant Growth Analysis

Frequently Asked Questions

What is the output signal of the GUVA-S12SD sensor and how do I connect it to an Arduino?

The sensor provides a linear analog voltage output. Connect the module's signal (S) pin to an analog input pin on your Arduino (e.g., A0), VCC to 5V (or 3.3V), and GND to ground. Use the analogRead() function to obtain a value proportional to the UV intensity. The included Gravity cable facilitates a plug-and-play connection with compatible DFRobot shields.

Does this sensor measure UV index directly, or is calibration required?

The sensor output is a voltage proportional to UV irradiance. To display a standard UV Index, you must apply a calibration formula to convert the ADC reading. The sensor is designed to comply with WHO grading standards, and sample code is typically provided by DFRobot to perform this conversion, mapping the raw signal to the 0-11+ UV Index scale.

What is the operating voltage range, and can I use it with 3.3V systems like ESP32?

Yes, the GUVA-S12SD operates from 3.3V to 5.5V DC, making it fully compatible with 3.3V logic platforms like ESP32, Raspberry Pi Pico, and STM32. Ensure you power the module's VCC pin with 3.3V and connect its analog output directly to the MCU's 3.3V-tolerant ADC input. The output signal range will scale with the supply voltage.

What is the sensor's response time and can it be used outdoors?

The sensor features a fast response time suitable for tracking real-time changes in UV intensity. Its operating temperature range of -25°C to 85°C and robust PCB construction allow for reliable outdoor use. For permanent outdoor installation, consider providing a protective enclosure to shield the electronics from direct rain and condensation while allowing UV light to reach the photodiode window.

Package Includes

  • 1 x DFRobot Gravity GUVA-S12SD Analog UV Light Sensor Module
  • 1 x 3-Pin Gravity Analog Cable

Additional Information

Weight 0.004 kg
Dimensions 3 × 2.5 cm

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