A
Anonymous
Apr 13, 2026
Rating: 5/5
Great for beginners
Easy to wire up with my Arduino Uno. The sensitivity adjustment works smoothly.
Description
Photoresistor Brightness Sensor Module Light Intensity Detection 3-Pin 4-Pin Compatible with Arduino
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 3.3V to 5V DC |
| Output Signal | Digital (TTL) and Analog |
| Pin Configuration | 3-Pin or 4-Pin Header |
| Sensor Type | Photoresistor (LDR) |
| Microcontroller Compatibility | Arduino, ESP8266, ESP32, STM32 |
| PCB Dimensions | 32mm x 14mm |
| Indicator LEDs | Power LED and Digital Output LED |
| Sensitivity Adjustment | Blue Potentiometer |
| Mounting Hole Size | 3mm Diameter |
| Operating Temperature | -10°C to +50°C |
5 reviews
A
Anonymous
Mar 17, 2026
Rating: 5/5
Perfect sensitivity
Detects light changes quickly. Great value for the price compared to other modules.
A
Anonymous
Mar 08, 2026
Rating: 5/5
Solid module
Used in home automation project to detect day vs night. Very reliable signal output.
A
Anonymous
Mar 06, 2026
Rating: 3/5
Okay product
Pinout diagram was missing from the package, had to look it up online. Sensor works fine though.
A
Anonymous
Jan 19, 2026
Rating: 4/5
Works well
Had to adjust the potentiometer to get the right threshold, but otherwise functions as expected.
5 FAQ
Q: Is this compatible with Raspberry Pi?
A: Yes, it is compatible. Please ensure you connect the analog output to an ADC if using a Pi.
Q: Can I use this sensor with 3.3V logic?
A: Yes, this module operates comfortably within the 3.3V to 5V DC range.
Q: What does the blue potentiometer do?
A: It adjusts the sensitivity threshold for the digital output signal.
Q: What is the maximum detection distance?
A: Detection range depends on ambient light intensity and the light source strength.
Q: Is the output analog or digital?
A: The module provides both analog output (AO) and digital switching output (DO).
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