CJMCU-GUVA-S12SD UV Sensor Module – Ultraviolet Light Detection
Product Description
The CJMCU-GUVA-S12SD UV Sensor Module is a compact ultraviolet (UV) light detection module designed to measure UV radiation from sunlight and other UV light sources. It uses a UV-sensitive photodiode to detect ultraviolet light within an approximate wavelength range of 240 nm to 370 nm.
This module converts detected UV light into an electrical signal that can be measured using a compatible microcontroller or electronic circuit. Its low power consumption, high sensitivity, and linear response make it suitable for UV monitoring experiments, outdoor measurement devices, and DIY electronics projects.
The sensor can be integrated with Arduino, ESP32, and other development boards for building UV detection systems, sunlight monitoring devices, and educational science projects.
Key Features
Wide UV Detection Range: Detects ultraviolet light in the approximate 240–370 nm wavelength range.
UV-Sensitive Photodiode: Uses a specialized photosensitive diode for UV detection.
Low Power Consumption: Designed for low-power electronic applications.
Wide Supply Voltage: Supports a 2.5V to 5V supply according to the supplied specifications.
High Sensitivity: Detects UV radiation from sunlight and other suitable UV sources.
Linear Response: Designed to provide a linear response to incident UV light.
Compact Module: Suitable for embedded systems and portable electronics projects.
Microcontroller Integration: Can be used in UV measurement and monitoring circuits.
Technical Specifications
Parameter | Specification |
Module Name | CJMCU-GUVA-S12SD |
Sensor Type | UV Photodiode |
Detection Type | Ultraviolet Light |
UV Wavelength Range | 240 nm – 370 nm |
Operating Voltage | 2.5V – 5V (supplier specification) |
Power Consumption | Low power |
Sensor Response | Linear (as specified) |
Sensitivity | High sensitivity (as specified) |
Output | Electrical signal from UV sensing circuit |
Primary Light Source | Sunlight and other UV sources |
Module Type | UV Detection Sensor Module |
Applications
Sunlight UV radiation monitoring
DIY UV detection meters
UV monitoring experiments
Outdoor sports equipment
UV measurement watches and portable devices
Mobile phone-based UV monitoring projects
Arduino and ESP32 UV sensor projects
Environmental monitoring systems
Educational electronics and science projects
Package Includes
1 × CJMCU-GUVA-S12SD UV Sensor Module
Important Notes
The stated 240–370 nm range describes the sensor's UV wavelength response, not a direct UV Index measurement.
UV Index calculation requires suitable calibration and conversion of the sensor output.
The actual output voltage and measurement range depend on the module's circuit design and connected measurement system.
Confirm the module's output type and pin labels before connecting it to a microcontroller.
Although the supplied specifications list a 2.5V–5V supply, check the actual breakout board's voltage and output compatibility before connecting it to an ESP32 or other controller.
Measurement accuracy can be affected by sensor orientation, sunlight conditions, temperature, and calibration.
