LDR light sensor module with day night logic PCB and potentiometer front view
LDR Light Sensor Module with Day Night Logic ₹60.00
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5mm LDR light dependent resistor sensor with two wire leads front view
LDR sensor 5mm diameter through hole component on breadboard close up
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5mm LDR light dependent resistor sensor with two wire leads front view
LDR sensor 5mm diameter through hole component on breadboard close up

5mm LDR Light Dependent Resistor Sensor

SKU: SEN-LC014

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Key Highlights

  • Light resistance of 10 to 20kΩ drops when bright light hits the sensor
  • Maximum voltage of 150V keeps it safe in a wide range of circuits
  • Response time of 20ms on and 30ms off makes it suitable for most switching tasks
  • Diameter of 5mm fits standard breadboard holes and PCB pads
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Description

The 5mm LDR light dependent resistor sensor changes resistance based on how much light hits it. In bright conditions the ldr sensor resistance drops to 10 to 20kΩ, and in darkness it rises to several hundred kilohms. Place it in a voltage divider with a fixed resistor and connect to any Arduino or ESP analog pin to read light levels.

One honest limitation is that the light dependent resistor has a response time of 20ms to increase and 30ms to decrease, so rapidly flickering light sources may not read accurately. Students and hobbyists this 5mm ldr sensor for automatic lighting, alarm triggers, and line-following builds. Drop it into a breadboard, add a 10K pull-down, and read the analog pin.

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Features:

  • Light resistance of 10 to 20kΩ gives a usable voltage shift across a divider circuit
  • Maximum voltage rating of 150V allows use in both low-voltage and mains-adjacent sensing circuits
  • Through-hole mount with 2-pin legs fits standard breadboard and PCB pads directly

Technical Specifications:

Specification Details
Mount Through Hole
Number of Pins 2
Light Resistance 10 – 20 kΩ
Maximum Voltage 150 V
Maximum Power 100 mW
Spectrum Peak Value 540 nm
Response Time Increase 20 ms
Response Time Decrease 30 ms
Diameter 5 mm

Applications:

  • Night lamp project uses this to switch on a light when the room gets dark
  • 5mm LDR light dependent resistor sensor reads brightness and adjusts fan speed automatically
  • A light dependent resistor in a line follower reads surface reflection and steers the robot

Package Includes:

  • 1 x 5mm LDR Light Dependent Resistor Sensor
1. How long does delivery take?

Most orders are delivered within 3–7 working days, depending on your location. Remote areas may take slightly longer, but we always aim for fast and reliable delivery.

2. What should I do if I receive a damaged product?

If you receive a damaged or defective product, please contact us within 24 hours and share an unboxing video. Our team will quickly verify and arrange a replacement.

3. Do you provide technical support for products?

Yes, STEMVOLT provides basic technical support for most DIY kits, sensors, and electronic components to help you use the product smoothly and without confusion.

4. Is payment on STEMVOLT secure?

Yes, all payments on STEMVOLT are processed through secure and encrypted payment gateways. Your personal and payment information remains completely safe and protected at all times.

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