LDR sensor 12mm – Light Dependent Resistor Photoresistor (2 Pcs)
It looks like you re referring to 12MM LDR, but could you clarify what LDR stands for in your context? LDR can stand for several things depending on the field (e.g., Light Dependent Resistor, Low Density Residential, etc.), and 12MM could refer to a measurement like 12 millimeters. The 12mm LDR (Light Dependent Resistor) is a photoresistor that changes resistance based on light intensity, making it ideal for light sensors, automatic street lights, and Arduino smart systems. Large surface area for improved sensitivity.
₹ 46
₹ 79
| : | |
| Made In : | India |
This sensor provides an easy and effective way to detect ambient light levels in electronic circuits.
Key Features
- 12mm photoresistor (LDR) size
- Resistance changes with light intensity
- High sensitivity to ambient light
- Simple 2-pin analog component
- No external power required for sensing
- Ideal for Arduino and microcontroller projects
- Low cost and easy to use
- Reliable for basic light detection applications
Technical Specifications
| Parameter | Specification |
|---|---|
| Sensor Type | Light Dependent Resistor (LDR) |
| Diameter | 12 mm |
| Resistance (Dark) | High resistance (MΩ range) |
| Resistance (Light) | Low resistance (kΩ range) |
| Response Time | Moderate |
| Operating Voltage | Passive component (no supply needed) |
| Material | Cadmium Sulfide (CdS) |
| Mounting Type | Through-hole (DIP style) |
How to Use
- Connect LDR in a voltage divider circuit
- Pair with a fixed resistor (e.g., 10K ohm)
- Read analog output using microcontroller (A0 pin)
- Higher light = lower resistance output
- Use readings for automation or control logic
- Calibrate threshold for switching applications
Applications
- Automatic street light systems
- Light-following robots
- Smart home lighting control
- Solar tracking systems
- Arduino light sensing projects
- Security light activation circuits
- Educational electronics experiments
Package Includes
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