Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Output Signal	Digital Switch Output (DO) & Analog Output (AO)
Detection Wavelength	700nm - 1100nm
Comparator Chip	LM393
Sensitivity Adjustment	Potentiometer Adjustable
Board Dimensions	32mm x 14mm x 5mm
Mounting Hole Diameter	3mm
Indicator LED	Power and Output Status LEDs
Interface Type	3-Pin PH2.0 Connector Compatible
Application Scope	Arduino, Raspberry Pi, DIY Electronics

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Reliable and compact

Used this for a automatic night light project. The response time is instant. The board is small and fits easily into tight enclosures. Highly recommend for beginners.

Anonymous

Mar 28, 2026

Rating: 4/5

Works well for school projects

Bought five of these for a class project. Four worked perfectly out of the box; one needed a little cleaning on the contacts but works fine now. Good consistency overall.

Anonymous

Mar 24, 2026

Rating: 4/5

Good sensor, fast shipping

The sensitivity is quite high, which is good for detecting subtle light changes. I had to adjust the pot a bit to stop false triggers in my room lighting, but once set, it's stable.

Anonymous

Mar 21, 2026

Rating: 5/5

Great dual output feature

Having both AO and DO on the same board saves space. The LM393 comparator is reliable. No noise issues observed even with long wires.

Anonymous

Mar 19, 2026

Rating: 5/5

Excellent light detection range

I tested this from complete darkness to direct sunlight, and the analog values scale linearly. Very useful for line-following robots or ambient light monitoring.

Anonymous

Mar 06, 2026

Rating: 5/5

Perfect for my Arduino project

This module works exactly as described. The analog output gives smooth readings for light intensity, and the digital threshold is easy to set with the potentiometer. Great value for the price.

5 FAQ

Q: What is the maximum distance this sensor can detect a light source?

A: As a photodiode, it detects ambient light intensity rather than distance. However, for a focused point source like an LED, it can reliably detect changes up to 10-15cm depending on the emitter's brightness.

Q: Does the package include connecting wires?

A: The standard package includes the module only. Connecting wires or headers are sold separately, though many users already have jumper wires available.

Q: Is the output inverted when the light is detected?

A: The digital output (DO) goes LOW when light intensity exceeds the threshold set by the potentiometer, and HIGH when it is below the threshold. This can be adjusted in your code logic.

Q: Can I use this outdoors?

A: While the electronic components are robust, the board itself is not waterproof or UV protected. For outdoor use, please house it in a weatherproof enclosure with a clear window for the sensor.

Q: Can this module be used directly with a 5V Arduino Uno?

A: Yes, this module operates comfortably within the 3.3V to 5V range, making it fully compatible with the Arduino Uno without needing a logic level converter.

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