# RS485 Ultraviolet (UV) Intensity Measure Sensor (290-390nm, UVA, UVB)

**Type:** Product page · **SKU:** SEN0642 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/rs485-uv-intensity-sensor-290-390nm-ip67-modbus-arduino.html ([markdown](https://core-electronics.com.au/rs485-uv-intensity-sensor-290-390nm-ip67-modbus-arduino.html.md))

IP67-rated RS485 UV sensor measures 290-390nm UV intensity & index. Modbus-RTU protocol, 5-30V DC. Ideal for environmental, health, & solar monitoring...

## Pricing

- **Price:** $107.62 (inc GST) — $97.84 AUD, exc GST
- **Quantity discounts:** 6+ $92.95 (exc GST) · 12+ $89.03 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 20 and Aug 24.

## Description

The RS485 UV Sensor is designed to measure ultraviolet (UV) intensity and index values within the wavelength range of 290-390nm. Utilizing a photoelectric detector and an industrial-grade microprocessor, ensures reliable and stable performance. The sensor operates on a DC 5-30V wide voltage power supply and employs the Modbus-RTU 485 communication protocol, making it compatible with [Arduino](https://www.dfrobot.com/topic-277.html) and other microcontroller platforms through expansion boards like the [TTL to RS485 module](https://www.dfrobot.com/product-1024.html). With an IP67-rated metal aluminum shell, it is suitable for environmental monitoring, health protection, crop growth monitoring, photovoltaic systems, and laboratory research.

**High Precision and Wide Measurement Range**

The sensor accurately measures UV intensity (0-15mW/cm²) and UV index (0-15) with a resolution of 0.01mW/cm² and an accuracy of ±10%FS. Its ability to detect UV wavelengths from 290-390nm ensures precise monitoring across various applications, from environmental studies to health protection.

**Industrial-Grade Durability**

Built with a metal aluminum shell and an IP67 protection rating, the sensor is resistant to dust, water, and harsh environmental conditions. This robust design ensures long-term reliability in demanding outdoor and industrial settings.

**Easy Integration and Compatibility**

The sensor supports the Modbus-RTU 485 protocol and can be seamlessly integrated with Arduino and other systems using compatible expansion boards. Its wide voltage power supply (DC 5-30V) and simple wiring make it user-friendly and adaptable to diverse setups.

![Features of RS485 UV Sensor](https://core-electronics.com.au/attachments/localcontent/3_0x0_53254392ed5.webp)

Overview of RS485 UV Sensor

### Specification

11. Power Supply: DC 5-30V
12. Working Current: <10mA
13. Output Mode: RS485 (Modbus-RTU protocol)
14. UV Intensity Range: 0-15mW/cm²
15. Resolution: 0.01mW/cm²
16. Accuracy: ±10%FS (@365nm, 60%RH, 25°C)
17. UV Index Range: 0-15
18. Wavelength Range: 290-390nm
19. Response Time: 0.2s
20. Operating Temperature: -25°C to +60°C
21. Protection Level: IP67
22. Cable Lengths: Sensor cable (20cm), Adapter cable (70cm)
### Documents

24. [Product wiki](https://wiki.dfrobot.com/SKU_SEN0642_RS485_RS485_UV_Sensor)
25. [Dimensional Drawing](https://wiki.dfrobot.com/SKU_SEN0642_RS485_RS485_UV_Sensor#target_5)
26. [Communication Protocol](https://wiki.dfrobot.com/SKU_SEN0642_RS485_RS485_UV_Sensor#target_6)
27. [Tutorial](https://wiki.dfrobot.com/SKU_SEN0642_RS485_RS485_UV_Sensor#target_7)
28. [FAQ](https://wiki.dfrobot.com/SKU_SEN0642_RS485_RS485_UV_Sensor#target_8)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0642-1.jpg)