DFRobot
Gravity: UV Index Sensor (240-370nm, UVA, UVB, UVC)
· MPN: SEN0636
The Gravity UV Index Sensor measures ultraviolet radiation across the 240–370 nm wavelength range, covering UVA, UVB, and UVC bands. It directly outputs a UV...
The Gravity UV Index Sensor measures ultraviolet radiation across the 240–370 nm wavelength range, covering UVA, UVB, and UVC bands. It directly outputs a UV index (0–11) and a harm risk level (1–5), eliminating the need for manual calculations.
With support for both I2C and UART communication and a 3.3–5V operating range, this sensor integrates easily with Arduino, Raspberry Pi, and other microcontroller platforms via the Gravity interface.
Key Features
- Direct UV Index Output – Outputs UV index (0–11) and harm level (1–5) with no conversion needed
- Wide UV Range – Measures 240–370 nm covering UVA, UVB, and UVC wavelengths
- Dual Communication – Supports both I2C (address 0x23) and UART protocols
- 3.3V–5V Compatible – Works with both 3.3V and 5V systems
- Compact Size – 30 × 22 mm
- Wide Operating Temperature – -30°C to 80°C
Specifications
- Operating Voltage – 3.3–5V DC
- UV Wavelength Range – 240–370 nm
- I2C Address – 0x23
- Operating Temperature – -30°C to 80°C
- Dimensions – 30 × 22 mm
Ideal For
- UV index monitoring and skin health assessment
- Environmental UV radiation monitoring
- Solar panel and photovoltaic system optimisation
- Agricultural light environment monitoring
- Laboratory UV research
Package Contents
- 1× Gravity UV Index Sensor (240–370 nm)
- 1× PH2.0-4P Connecting Cable
Jargon buster
Plain-language definitions for the technical terms used above.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- I2C address
- An I2C address is the number a device uses so a microcontroller can tell it apart from other devices on the same I2C bus. It matters because two devices with the same fixed address may conflict if used together.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- Torque
- A twisting force that causes something to rotate, usually measured in newton-metres or kilogram-centimetres. It matters when choosing motors, servos, gears, and tools because higher torque is needed to lift heavier loads, turn larger wheels, or move mechanisms without stalling.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
- UVA
- UVA is the longer-wavelength part of ultraviolet light, closest to visible violet light. Measuring it separately matters when you need to distinguish general UV exposure from the more energetic UVB and UVC bands.
- UVB
- UVB is a middle band of ultraviolet light that is more energetic than UVA and is important in sun exposure and plant-related UV monitoring. A sensor with a separate UVB channel lets you measure this band without it being mixed together with other UV light.
- UVC
- UVC is a short-wavelength, high-energy band of ultraviolet light often used in germicidal lamps and curing applications. A separate UVC reading matters if your project needs to monitor or verify UVC sources rather than just detect general UV light.
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Brands
Sensors & Input
Supplier page — dfrobot.com
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