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Home / Computer Hardware, Monitors & Peripherals / Photoresistor Sensor Module Brightness Light Detection Sensor Light-Controlled Switch 3/4-Pin DC5/12V

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Voltage DC 3.3V - 5V
Interface Type 3-Pin / 4-Pin Header
Sensor Type Photoresistor (LDR)
Output Signal Digital Switch (DO) & Analog (AO)
PCB Material FR-4 Fiberglass
Board Dimensions 32mm x 14mm
Product Weight 3 grams
Sensitivity Control Adjustable Potentiometer
Indicator Lights Power LED & Trigger LED
Compatibility Arduino, Raspberry Pi, STM32

5 reviews

A

Anonymous

Mar 30, 2026

Rating: 5/5

Fast delivery

Great component for beginners learning about analog sensors. Documentation online is plentiful and this module matches standard tutorials.

A

Anonymous

Mar 23, 2026

Rating: 5/5

Perfect for my Arduino project

Works exactly as described. I used this to build a automatic night light and the sensitivity adjustment is very useful. Easy to wire up.

A

Anonymous

Feb 16, 2026

Rating: 4/5

Good value but small

The module is quite small which is great for compact builds, but the pins are close together. Sensitivity is accurate enough for hobby use.

A

Anonymous

Feb 06, 2026

Rating: 5/5

Reliable light detection

Used it for a garden sensor project. It handles outdoor ambient light changes well when protected in a case. Very stable output.

A

Anonymous

Jan 17, 2026

Rating: 3/5

Potentiometer tricky

The sensor works, but the potentiometer was a bit stiff to turn initially. Took some time to calibrate the threshold correctly.

5 FAQ

Q: Does it output analog values?

A: Yes, the AO pin provides an analog voltage proportional to light intensity, while DO provides a digital trigger.

Q: Can I use this with 3.3V logic levels?

A: Yes, the module operates comfortably within the 3.3V to 5V range, making it safe for most microcontrollers.

Q: Are headers pre-soldered?

A: This depends on the variant selected. Please check the product images or description for pinned vs. unpinned options.

Q: What is the detection range?

A: It detects visible light spectrum. The exact lux range depends on the potentiometer setting and ambient conditions.

Q: Can it power an LED directly?

A: The module output is a signal pin. You should use a transistor or relay module to drive high-power loads like LEDs.

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