LDR Light Sensor Module 4-Pin with Digital Output (DO)
Prices updated: 13 Oct 2026
Compare prices
| Store | product | Price | View in store |
|---|---|---|---|
 MicroohmCheapest | LDR Module 4 pin LM393 Photosensitive Light-Dependent Control Sensor | 30 EGP50 | View in store |
 Ekostra | LDR Photosensitive Light Sensor Module 4-Pin | 35 EGP40 | View in store |
 UGE | Light Detection Photosensitive LDR Sensor 4 pin Module | 50 EGP | View in store |
Price history
Lowest daily price, last 90 days
Lowest price recorded: 30 EGP
About this product
A 4-pin light-dependent resistor (LDR) module that gives a digital output based on ambient light level. The DO pin goes high when light falls below the set threshold and low when it rises above it. It can drive a microcontroller input directly or switch a relay module, which makes it suitable for light-operated switches and simple brightness detection projects.
Specifications
- Output type
- Digital (DO), threshold set by light level
- Sensing element
- LDR (photoresistor)
- Number of pins
- 4
- DO logic
- High in low light, low in bright light
- Interface
- Direct to microcontroller or relay module
Frequently asked questions
What is the price of LDR Light Sensor Module 4-Pin with Digital Output (DO) in Egypt?
LDR Light Sensor Module 4-Pin with Digital Output (DO) currently costs between 30 and 50 EGP across 3 offers in Egypt.
Where can I buy LDR Light Sensor Module 4-Pin with Digital Output (DO) in Egypt?
LDR Light Sensor Module 4-Pin with Digital Output (DO) is available from Microohm, Ekostra, and UGE. Compare the offers above to find the best price.
Can I connect the DO pin directly to a microcontroller?
Yes. The DO output can connect directly to a microcontroller input to read high and low levels. Make sure the module's supply voltage matches your board's logic level.
How do I use it to switch a relay?
Connect DO to the input of a relay module. DO goes high in darkness, so set the relay module's trigger to match that behavior (active-high or active-low) to switch the load when it gets dark.
