# 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.

## 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)