Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Communication Protocol	RS485 (Modbus RTU)
Measurement Range	0 - 200,000 Lux
Operating Voltage	5V - 24V DC
Output Signal	Digital RS485
Spectral Response	Visible Light (380nm - 730nm)
Response Time	< 1 Second
Operating Temperature	-20°C to +70°C
PCB Dimensions	35mm x 20mm x 5mm
Accuracy	±5% at 25°C
Application	Smart Agriculture, Industrial Lighting Control

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Precise enough for solar tracking

The sensitivity of this sensor is impressive. I used it to build a dual-axis solar tracker, and the system adjusts perfectly based on real-time illuminance data. No lag detected.

Anonymous

Mar 28, 2026

Rating: 4/5

Good for learning Modbus

Bought this for a university project. It works well with Arduino and Raspberry Pi using a simple RS485 converter. The data output is clean and easy to parse.

Anonymous

Mar 19, 2026

Rating: 5/5

Robust and reliable

We deployed ten of these units across our warehouse for automated lighting control. They have been running 24/7 for three months without a single failure. The build quality is solid.

Anonymous

Mar 10, 2026

Rating: 4/5

Great accuracy, easy wiring

Used this to monitor light levels in my greenhouse setup. The RS485 interface allows for long cable runs without signal loss. Only minor issue was the documentation could be more detailed on register maps.

Anonymous

Mar 10, 2026

Rating: 5/5

Perfect for industrial automation projects

This sensor module integrates seamlessly with our PLC system. The Modbus RTU communication is stable, and the readings are consistent even in varying light conditions. Highly recommended for professional use.

Anonymous

Mar 02, 2026

Rating: 5/5

Excellent value for money

Compared to other sensors in this price range, the GY-485-ALSV1 offers superior precision. It responded instantly to changes in lighting during my tests. Very satisfied with the purchase.

5 FAQ

Q: Does this sensor support standard Modbus RTU over RS485?

A: Yes, the GY-485-ALSV1 fully supports the standard Modbus RTU protocol over the RS485 interface, making it compatible with most industrial controllers and SCADA systems.

Q: Is there a waterproof enclosure available for outdoor use?

A: The module itself is not waterproof. However, it can be easily housed in a standard IP65 or IP67 junction box for outdoor applications like weather stations or agricultural monitoring.

Q: How do I calibrate the sensor if the readings seem off?

A: The sensor comes factory-calibrated. If adjustments are needed, specific calibration commands can be sent via the Modbus protocol to offset the values. Please refer to the digital manual for the specific register addresses.

Q: What is the maximum cable length recommended for stable communication?

A: For reliable RS485 communication, we recommend a maximum cable length of 1200 meters, provided you use shielded twisted pair cables and proper termination resistors.

Q: Can this module be powered directly by a 12V battery?

A: Absolutely. The module operates within a voltage range of 5V to 24V DC, so a 12V battery is perfectly suitable for powering the sensor.

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