> **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 Photoelectric Solar Radiation Sensor (400-1100nm)

**Type:** Product page · **SKU:** SEN0640 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/rs485-photoelectric-solar-radiation-sensor-400-1100nm-ip67-modbus-rtu.html ([markdown](https://core-electronics.com.au/rs485-photoelectric-solar-radiation-sensor-400-1100nm-ip67-modbus-rtu.html.md))

IP67-rated RS485 solar radiation sensor measures 400-1100nm solar energy. Modbus-RTU protocol, 5-30V DC. Perfect for photovoltaic systems & crop monitoring...

## Pricing

- **Price:** $104.95 (inc GST) — $95.41 AUD, exc GST
- **Quantity discounts:** 6+ $90.64 (exc GST) · 12+ $86.82 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 16 and Sep 21.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0640:1` (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/SEN0640:1.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 Photoelectric Solar Radiation Sensor is designed to measure solar radiation in the **spectral range of 400-1100nm**. It uses the photoelectric principle to convert sunlight into electrical signals. Featuring a highly sensitive photosensitive element and a wide-spectrum absorption range, the sensor delivers accurate solar radiation measurements.

The integrated dust cover, with a transmittance of up to 95%, ensures minimal interference from environmental factors, further enhancing measurement accuracy. Additionally, the sensor operates with a wide voltage range of DC 5-30V and supports Modbus-RTU communication via RS485, making it an ideal choice for integration with [Arduino](https://www.dfrobot.com/topic-277.html).

**Wide Voltage Support**

The sensor operates on a DC 5-30V power supply, ensuring compatibility with various systems and making it versatile for different applications.

**High Sensitivity and Wide Spectrum Range**

Utilizing high-precision photosensitive elements, the sensor ensures accurate measurement across a broad spectrum, from 400 to 1100nm, making it ideal for solar radiation applications in various fields.

**Durable and Environmentally Resistant**

The sensor is housed in a rugged metal aluminum shell with an IP67 protection level, ensuring durability and reliability even in harsh outdoor environments. The dust cover is specially treated to reduce dust absorption, enhancing long-term stability and performance.

![The RS485 Photoelectric Solar Radiation Sensor Integrated Dust Cover](https://core-electronics.com.au/attachments/localcontent/1_0x0_5549075f3a8.webp)

The RS485 Photoelectric Solar Radiation Sensor Integrated Dust Cover

### Specification

12. Power Supply: DC 5-30V
13. Working Current: <10mA
14. Output Mode: RS485
15. Measurement Range: 0-1800W/m²
16. Wavelength Range: 400-1100nm
17. Accuracy: ±5%
18. Resolution: 1W/m²
19. Response Time: =10S
20. Non-Linearity: <±2%
21. Annual Stability: =±2%
22. Cosine Response: =±10%
23. Operating Temperature: -25°C to +60°C
24. Protection Level: IP67
25. Sensor Cable Length: 20cm
26. Adapter Cable Length: 70cm
### Documents

28. [Product wiki](https://wiki.dfrobot.com/SKU_SEN0640_RS485_Photoelectric_Solar_Radiation_Sensor)
29. [Dimensional Drawing](https://wiki.dfrobot.com/SKU_SEN0640_RS485_Photoelectric_Solar_Radiation_Sensor#target_5)
30. [Communication Protocol](https://wiki.dfrobot.com/SKU_SEN0640_RS485_Photoelectric_Solar_Radiation_Sensor#target_6)
31. [Tutorial](https://wiki.dfrobot.com/SKU_SEN0640_RS485_Photoelectric_Solar_Radiation_Sensor#target_7)
32. [FAQ](https://wiki.dfrobot.com/SKU_SEN0640_RS485_Photoelectric_Solar_Radiation_Sensor#target_8)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0640-1.jpg)