A
Anonymous
Feb 26, 2026
Rating: 5/5
Reliable component
Used several of these for a line follower robot. Consistent performance across all units.
Description
This photoresistor sensor module detects light intensity and functions as a photoelectric switch for electronic projects. It includes Dupont wires for easy connection and is available in either a 3-pin or 4-pin configuration to suit different circuit requirements. The compact design facilitates integration into breadboards or custom PCB layouts for automated lighting or sensing applications. Ensure the operating voltage matches your microcontroller specifications before connecting the module to prevent damage.
Reviews
Attributes
| Brand | - |
| Category | Root / Electronic Components / Maker DIY |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital Switching Output (0 and 1) |
| Pin Interface | 3-Pin or 4-Pin (GND, VCC, OUT) |
| Sensor Type | Photoresistor (LDR) |
| PCB Dimensions | 32mm x 14mm |
| Mounting Hole Diameter | 3mm |
| Comparator Chip | LM393 |
| Sensitivity Control | Adjustable Potentiometer |
| Indicator LEDs | Power and Output Status |
| Package Contents | 1x Module, 1x Set of Dupont Wires |
5 reviews
A
Anonymous
Feb 20, 2026
Rating: 5/5
Great for light sensing projects
This module works perfectly with my Arduino Uno. The sensitivity adjustment is very responsive.
A
Anonymous
Jan 28, 2026
Rating: 5/5
Perfect for school project
Easy to wire up and detect light changes accurately. Shipping was fast too.
A
Anonymous
Jan 24, 2026
Rating: 4/5
Good value for money
Works as described. Instructions could be clearer for beginners but overall satisfied.
A
Anonymous
Jan 19, 2026
Rating: 4/5
Solid build quality
PCB looks clean and soldering is good. Potentiometer feels a bit tight but works.
5 FAQ
Q: Does it provide analog output?
A: This specific module provides a digital switching output. For analog, check our LDR sensor without comparator.
Q: Are the Dupont wires male-to-female?
A: Yes, the included wires are female-to-female jumper wires suitable for breadboards.
Q: What is the maximum current draw?
A: The module draws approximately 10mA when the output LED is active.
Q: Is this compatible with 3.3V microcontrollers?
A: Yes, the module operates comfortably between 3.3V and 5V DC.
Q: How do I adjust the sensitivity?
A: Use the blue potentiometer on the board. Turn clockwise to increase sensitivity.
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