A
Anonymous
Apr 08, 2026
Rating: 4/5
Good value
Sensor is responsive. Only giving 4 stars because the pin labeling was a bit faint on my batch.
Description
This photoresistor sensor module detects light intensity for use in electronic circuits and automation projects. It operates within a 3.3V to 5V voltage range and features a compact design suitable for microcontroller integration. The unit includes specific pin configurations, available as either a 3-pin or 4-pin interface depending on the selected variant. Ensure connections match your system's voltage requirements before powering the device.
Reviews
Attributes
| Brand | - |
| Category | Root / Electronic Components / Maker DIY |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Interface Type | 3-Pin / 4-Pin Header |
| Detection Component | GL5528 Photoresistor |
| Output Signal | Digital Switching Output (0 and 1) |
| PCB Dimensions | 32mm x 14mm x 5mm |
| Mounting Hole Size | 3mm Diameter |
| Comparator Chip | LM393 Wide Voltage Comparator |
| Sensitivity Adjustment | Via Blue Potentiometer |
| LED Indicator | Power & Output Status LEDs |
| Package Content | 1x Photoresistor Sensor Module |
5 reviews
A
Anonymous
Apr 04, 2026
Rating: 3/5
Needed help wiring
Works fine once connected correctly, but beginners might struggle with DO vs AO pins if not reading the wiki.
A
Anonymous
Feb 23, 2026
Rating: 5/5
Reliable Component
Bought five of these for a school project. All worked flawlessly out of the box.
A
Anonymous
Jan 28, 2026
Rating: 5/5
Great Sensitivity
The LM393 comparator makes the output very clean. No jittering signals.
A
Anonymous
Jan 18, 2026
Rating: 5/5
Perfect for Arduino Night Light
Works exactly as described. Easy to calibrate with the potentiometer. Used it for an automatic night light project.
5 FAQ
Q: What is the detection range?
A: It detects ambient light intensity. The threshold is adjustable via the potentiometer based on your environment.
Q: Is the pinout standard?
A: Generally yes, but please check the silkscreen on the PCB. Usually VCC, GND, and DO.
Q: Does this provide analog output?
A: This module primarily provides digital output (DO). For analog, you need to read the photoresistor directly or check if your specific variant has an AO pin.
Q: How much current does it draw?
A: Typical consumption is low, around 10-20mA depending on LED status and load.
Q: Can I use this with 3.3V logic?
A: Yes, the operating voltage range is 3.3V to 5V, making it compatible with most 3.3V microcontrollers.
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