LTR390 UV Sensor Module I2C 300–350nm Light Detection
LTR390 UV Sensor Module I2C 300–350nm Light Detection
LTR390 UV & Ambient Light Sensor Module with I2C Interface
The Gaqqee LTR390 UV Sensor Module is a high-sensitivity, low-power ultraviolet and ambient light detection module ideal for makers, hobbyists, researchers, and engineers. With a peak spectral response between 300 and 350 nm, this compact I2C module delivers accurate, real-time UV and ambient light intensity data — no external ADC required. Made in Mainland China.
Key Features
- High Sensitivity & Fast Response: The LTR390-UV chip delivers precise UV and ambient light sensing with minimal lag, making it suitable for dynamic outdoor or laboratory environments.
- True UV Sensing: Unlike sensors that estimate UV from visible light, the LTR390 uses a genuine ultraviolet photodetector for accurate readings in the 300–350 nm spectrum range.
- Digital I2C Output: Onboard ADC and MCU convert light data to clean digital signals over an I²C interface — seamlessly compatible with Arduino, Raspberry Pi, and most popular microcontrollers.
- No External ADC Needed: Internal bias circuitry and analogue-to-digital conversion are fully integrated, simplifying your circuit design and reducing component count.
- Dual-Mode Measurement: Simultaneously measures both UV intensity and ambient light levels, making it a versatile choice for photometric experiments, outdoor UV monitoring, weather stations, and more.
- Low Power Consumption: Energy-efficient design is well-suited for battery-operated or power-sensitive projects.
- Compact Form Factor: At just 18 × 25.5 mm, this module fits neatly into tight enclosures and prototyping setups.
Specifications
| Interface | I2C (I²C) |
| Peak Spectral Response | 300 – 350 nm (UVA range) |
| Dimensions | 18 × 25.5 mm |
| Package Type | TQFP |
| Power Consumption | Low Power |
| Condition | New |
| Origin | Made in Mainland China |
What's in the Box
- 1 × LTR390 UV Sensor Module
- 1 × Pin Header
Perfect For
- DIY weather stations and outdoor UV monitoring
- Photometric and light-intensity research experiments
- Arduino, Raspberry Pi, and microcontroller projects
- Wearable UV exposure tracking devices
- Educational electronics and STEM projects
Related Products You May Like
Looking for more tools and storage solutions for your projects? Check out our Airtight Transparent PET Storage Bottle for organizing small components, or browse our Leather Hole Punch Tool for DIY crafting needs. For hands-on makers, the U & V Leather Groover Skiving Tool Kit is another great addition to your workshop.
Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What microcontrollers is the LTR390 UV Sensor Module compatible with?
A: The LTR390 UV Sensor Module communicates via a standard I2C interface, making it compatible with a wide range of microcontrollers and single-board computers including Arduino (Uno, Mega, Nano), Raspberry Pi, ESP8266, ESP32, and more. Most platforms with I2C support can integrate this module with minimal setup.
Q: Does the LTR390 module measure UV index?
A: The LTR390 module measures raw UV light intensity in the 300–350 nm spectral range using a genuine UV photodetector. While it does not output a direct UV Index value, the raw UV data it provides can be used to calculate a UV Index figure using standard formulas available in the sensor's datasheet or community libraries.
Q: Do I need an external ADC to use this UV sensor module?
A: No. The LTR390 UV Sensor Module has a fully integrated analogue-to-digital converter (ADC) and microcontroller unit (MCU) built directly onto the module. This means you get clean digital output over I2C without needing any additional external ADC components.
Q: What are the dimensions and power requirements of this module?
A: The module measures a compact 18 × 25.5 mm, making it easy to embed in enclosures or prototyping boards. It is designed for low power consumption, making it suitable for battery-operated applications. Please refer to the official LTR390 datasheet for precise voltage and current specifications.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.