Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Brand	TELESKY
Operating Voltage	3.3V - 5V DC
Output Signal	Digital Switching Output (0 and 1)
Detection Component	LDR Photoresistor
Sensitivity Adjustment	Potentiometer Adjustable
PCB Size	32mm x 14mm
Mounting Hole Diameter	3mm
Comparator Chip	LM393
Application Scope	Arduino, Raspberry Pi, DIY Electronics
Package Contents	1 x Light Sensor Module

6 reviews

Anonymous

Mar 27, 2026

Rating: 4/5

Good value, easy to use

Great little module for the price. It connected easily to my microcontroller. I deducted one star because the included pins were not pre-soldered, but that's minor for hobbyists.

Anonymous

Mar 25, 2026

Rating: 5/5

Perfect for my Arduino project

This sensor module works exactly as described. The sensitivity adjustment via the potentiometer is very smooth, allowing me to set the exact light threshold needed for my automatic night light project.

Anonymous

Mar 21, 2026

Rating: 5/5

Reliable and responsive

I bought five of these for a line-following robot variation that reacts to light zones. All units performed consistently with fast response times. Highly recommended for students.

Anonymous

Mar 18, 2026

Rating: 5/5

Compact and efficient

The form factor is small enough to fit into tight enclosures. The LM393 comparator provides a clean digital signal which makes coding the logic very straightforward.

Anonymous

Mar 14, 2026

Rating: 5/5

Excellent build quality

The PCB looks professional and the soldering points are clear. I've been running this continuously for a week in a smart home prototype with zero issues.

Anonymous

Mar 13, 2026

Rating: 4/5

Works well after calibration

Took me a minute to figure out how to tune the potentiometer correctly, but once I did, it triggers perfectly when the room lights go off. Good learning component.

5 FAQ

Q: Is the light detection range adjustable?

A: Absolutely. There is a blue potentiometer on the board that allows you to adjust the sensitivity threshold. Turning it changes the light level at which the digital output switches state.

Q: Can I power this with 3.3V from a Raspberry Pi?

A: Yes, the operating voltage range is 3.3V to 5V DC, so it is fully compatible with both 3.3V and 5V microcontrollers like the Raspberry Pi and Arduino.

Q: Does this module output analog or digital signals?

A: This specific TELESKY module outputs a digital signal (HIGH/LOW). If you need analog readings of light intensity, you would need to connect the LDR directly to an analog pin without the comparator board.

Q: Does this come with jumper wires?

A: The package typically includes the sensor module only. Jumper wires and headers are usually sold separately, though some bundles may vary. Please check your specific order details.

Q: What is the maximum current this sensor can switch?

A: The onboard LED indicator draws very little current. The digital output pin is designed to interface with microcontroller GPIOs and should not be used to drive high-power loads directly. Use a relay or transistor for heavy loads.

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