GUVA-S12SD UV Sensor Module | Sunlight Ultraviolet Intensity Detector

The GUVA-S12SD UV Sensor Module is a compact and reliable solution for measuring ultraviolet (UV) radiation from sunlight. Designed with a high-sensitivity photodiode, it accurately detects UV light in the 240nm to 370nm range, making it ideal for applications that require monitoring of solar UV intensity.

With its simple analog output, this module can be directly interfaced with popular development boards such as Arduino, ESP8266, ESP32, and other microcontrollers, allowing quick integration into embedded and IoT projects.

Why Use This Sensor?

Exposure to ultraviolet radiation is an important factor in outdoor safety, environmental monitoring, and smart automation systems. This sensor enables real-time measurement of UV levels, helping developers and users create systems that respond intelligently to changing sunlight conditions.

It is especially useful for projects involving UV index monitoring, outdoor alert systems, and environmental data collection.

Typical Usage

This module can be connected easily to any microcontroller using three pins: VCC, GND, and analog output. By reading the analog voltage, the system can estimate UV intensity and trigger actions such as displaying data, activating alerts, or logging environmental conditions.

For example, it can be used in a weather monitoring system to display UV levels on an LCD or send notifications when UV exposure exceeds safe limits.

Key Features

• Wide operating voltage range of 2.5V to 5V
• Low power consumption suitable for battery-powered applications
• High sensitivity for accurate UV detection
• Stable and linear analog output
• Detection range from 240nm to 370nm
• Wide detection angle of 130 degrees
• Built using a reliable Schottky-type photodiode
• Compact form factor for easy integration

Applications

• UV index monitoring systems
• Wearable UV detection devices
• Smart weather stations
• Outdoor safety and alert systems
• Mobile and portable electronics
• IoT and embedded system projects
• Agricultural and environmental monitoring

Technical Specifications

• Model: GUVA-S12SD (HW-837 compatible variant)
• Operating Voltage: 2.5V to 5V
• Detection Range: 240nm to 370nm
• Output: Analog voltage
• Detection Angle: 130°
• Dimensions: 11mm × 27mm
• Current Consumption: Microamp level

Package Contents

• 1 × GUVA-S12SD UV Sensor Module

Additional Information

• A compatible HW-837 variant may be supplied based on availability (functionally identical).
• This module is designed specifically for ultraviolet light detection and does not measure visible light intensity.