Description
Reviews
| Brand | - |
| Category | Root / Electronic Components / Maker DIY |
| Origin | - |
| Brand | Generic / OEM |
| Model Number | KY-018 Compatible |
| Operating Voltage | 3.3V - 5V DC |
| Output Type | Analog (AO) & Digital (DO) |
| Comparator Chip | LM393 |
| Pin Configuration | 3-Pin or 4-Pin Header |
| PCB Dimensions | 32mm x 14mm |
| Weight | 3g |
| Wire Length | Approx. 20cm |
| Condition | New |
Anonymous
Mar 18, 2026
Rating: 5/5
Great for Arduino projects
Works perfectly with my Uno. Easy to adjust sensitivity using the potentiometer. Included wires were a nice touch.
Anonymous
Mar 09, 2026
Rating: 4/5
Good value
Works well for the price. Wires could be slightly longer but overall satisfied with the performance.
Anonymous
Feb 23, 2026
Rating: 5/5
Beginner friendly
Clear labeling on the board helped me learn analog inputs. Great starter component for students.
Anonymous
Feb 19, 2026
Rating: 5/5
Reliable light sensor
Used it for a night light project. Very responsive to changes in room lighting. Digital output is crisp.
Anonymous
Jan 17, 2026
Rating: 4/5
Solid component
One module was slightly loose in the header but works fine after tightening. Good sensitivity range.
Q: Is example code included in the package?
A: No physical code is included, but many free examples exist online for Arduino and Raspberry Pi.
Q: Can I use this sensor outdoors?
A: It is not waterproof. Please enclose it in a protective case for outdoor use.
Q: How do I adjust the sensitivity threshold?
A: Use a small screwdriver to turn the blue potentiometer on the board until the LED indicator behaves as desired.
Q: What is the difference between 3-pin and 4-pin versions?
A: The 4-pin typically separates AO and DO clearly, while 3-pin may share ground differently. Both function similarly.
Q: Does this work with 3.3V logic boards like ESP32?
A: Yes, it operates comfortably between 3.3V and 5V DC.
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