> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 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.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0642:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SEN0642:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## 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)