LDR Light Sensor Module with LM393 Comparator, Digital Output
Prices updated: 12 Oct 2026
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| Store | product | Price | View in store |
|---|---|---|---|
 UGE | Light Sensor Module with LDR and OP-amp amplifier 3PIN Digital Output Optical Sensitive Resistance Module | 45 EGP | View in store |
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Lowest price recorded: 45 EGP
About this product
A light-sensing module built around an LDR photoresistor and an LM393 comparator, giving a digital high/low output (DO) when ambient light crosses a threshold. The threshold is set by an onboard blue potentiometer. It runs from 3.3 V to 5 V and is used for light detection and simple brightness-triggered switching in maker projects.
Specifications
- Operating voltage
- 3.3V-5V
- Digital output
- DO (0 and 1)
- Comparator
- LM393
- Sensitivity adjustment
- Blue digital potentiometer
- PCB size
- 3 cm × 1.6 cm
- Indicators
- Power (red), digital output (green)
Frequently asked questions
What is the price of LDR Light Sensor Module with LM393 Comparator, Digital Output in Egypt?
LDR Light Sensor Module with LM393 Comparator, Digital Output currently costs 45 EGP in Egypt.
Where can I buy LDR Light Sensor Module with LM393 Comparator, Digital Output in Egypt?
LDR Light Sensor Module with LM393 Comparator, Digital Output is available from UGE. Compare the offers above to find the best price.
How do I connect it to an Arduino?
Connect VCC to 3.3V or 5V, GND to GND and the DO pin to any digital input. Read the pin with digitalRead to get the switched state, then adjust the blue potentiometer until the output changes at the brightness you need.
Can it give a continuous brightness value?
No. The listing describes only a digital output, which switches between 0 and 1. For a continuous reading you need an analog output module or an LDR voltage divider read by an ADC pin.
