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Home / Computer Hardware, Monitors & Peripherals / Photoresistor Sensor Module Brightness Photoelectric Light Detection Sensor 3/4-Pin

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Voltage 3.3V - 5V DC
Output Signal Digital Switch Output (0 and 1)
Sensitivity Control Adjustable via Potentiometer
Pin Configuration 3-Pin (VCC, GND, DO)
PCB Dimensions 3.2cm x 1.4cm
Comparator IC LM393
Indicator LEDs Power and Trigger Status
Operating Temperature -10°C to +50°C
Response Time Microsecond Range
Microcontroller Compatibility Arduino, Raspberry Pi, ESP32

5 reviews

A

Anonymous

Apr 10, 2026

Rating: 5/5

Easy to Use

Clear silkscreen on the board made wiring very simple for my school project.

A

Anonymous

Mar 23, 2026

Rating: 4/5

Good Value Module

Works well for the price. Pin headers were not included but easy to solder.

A

Anonymous

Feb 12, 2026

Rating: 5/5

Great Sensitivity

I use this for a automatic night light project. It detects dusk perfectly.

A

Anonymous

Jan 27, 2026

Rating: 5/5

Perfect for Arduino Projects

This LDR module worked straight out of the box. The sensitivity adjustment is very responsive.

A

Anonymous

Jan 21, 2026

Rating: 5/5

Reliable Sensor

Stable output signal, no flickering when light levels change gradually.

5 FAQ

Q: Can I use this to detect laser pointers?

A: Yes, the sensor is sensitive enough to detect focused light sources like lasers.

Q: How do I calibrate the light threshold?

A: Use the blue potentiometer on the board. Turn it while exposing the sensor to your target light level.

Q: What is the maximum current draw?

A: The module typically consumes around 20mA when the output is active.

Q: Is this compatible with 3.3V systems?

A: Yes, this module operates comfortably between 3.3V and 5V DC.

Q: Does it provide analog output?

A: This specific module provides a digital output. For analog, please check our LDR analog sensor.

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