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  • High Quality Light Dependent Resistor Photoresistor PIR Sensor CDS Photoresistor Cell Metal Case LDR Sensor
  • High Quality Light Dependent Resistor Photoresistor PIR Sensor CDS Photoresistor Cell Metal Case LDR Sensor
  • High Quality Light Dependent Resistor Photoresistor PIR Sensor CDS Photoresistor Cell Metal Case LDR Sensor
  • High Quality Light Dependent Resistor Photoresistor PIR Sensor CDS Photoresistor Cell Metal Case LDR Sensor
  • High Quality Light Dependent Resistor Photoresistor PIR Sensor CDS Photoresistor Cell Metal Case LDR Sensor
  • High Quality Light Dependent Resistor Photoresistor PIR Sensor CDS Photoresistor Cell Metal Case LDR Sensor
High Quality Light Dependent Resistor Photoresistor PIR Sensor CDS Photoresistor Cell Metal Case LDR Sensor
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High Quality Light Dependent Resistor Photoresistor PIR Sensor CDS Photoresistor Cell Metal Case LDR Sensor

  • >= 1000 Pieces
    $0.90
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High Quality Light Dependent Resistor Photoresistor PIR Sensor CDS Photoresistor Cell Metal Case LDR Sensor

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Light Intensity Detection: The High Quality Light Dependent Resistor (LDR) sensor measures and responds to changes in light intensity using a semiconductor material (e.g., CdS/CdSe), enabling precise light-level monitoring.
  • Automation Control: Designed to trigger actions in response to light changes, such as activating lights in dark environments or adjusting device settings in home/industrial automation systems.

Key features

  • 1. Advanced Semiconductor Material Technology

    • With a semiconductor material core (e.g., cadmium sulfide), this LDR achieves precise light sensitivity for accurate resistance changes. The durable metal case ensures longevity in harsh environments, outperforming plastic-cased alternatives*.

  • 2. Simplified Analog Integration Design

    • With an analog output and straightforward metal leads, you can easily integrate this sensor into DIY circuits, automation systems, or prototyping projects without complex configurations.

  • 3. Rapid Response Performance

    • With a fast resistance response time (~30% quicker than standard LDRs), enable real-time light detection for applications like automatic lighting or security alerts*.

  • 4. Versatile Scenario Adaptability

    • Designed for diverse applications—from home automation (light-controlled switches) to commercial security systems—this LDR seamlessly adapts to scenarios requiring light-based monitoring or control.

  • 5. Certified Reliability

    • Backed by industry-standard certifications (e.g., safety and quality compliance), this sensor ensures dependable performance in critical applications like environmental monitoring or industrial systems.

Product details

High Quality Light Dependent Resistor Photoresistor PIR Sensor CDS Photoresistor Cell Metal Case LDR Sensor

The High Quality Light Dependent Resistor (LDR) Sensor is a resistive light-detection component designed for precision in varying light conditions. Built with semiconductor materials like cadmium sulfide (CdS) or cadmium selenide (CdSe), it features a metal case for durability and analog output for seamless integration into circuits. Ideal for automation, security systems, and environmental monitoring, this sensor offers customizable performance tailored to specific light-sensing needs.

Technical specifications

FeatureSpecificationBenefit
MaterialCadmium sulfide (CdS)/cadmium selenide (CdSe)High sensitivity to light intensity changes
Form FactorCylindrical with metal caseEnhanced durability and environmental resistance
InterfaceAnalog outputDirect compatibility with analog circuits
Response Time5–10 ms (typical)Rapid detection of light fluctuations
Operating Range0.1–1000 luxVersatile for indoor/outdoor applications

Customization guide

Adjustable parameters include:

  • Material selection (e.g., CdS for general use, CdSe for UV sensitivity) to optimize light wavelength detection.
  • Lead length/termination for seamless integration into compact or complex circuit designs.
  • Sensitivity tuning via resistor pairing to meet specific threshold requirements.

Get inspired

With its analog output and fast response, this LDR enables smart automation systems—like automatic lighting in homes or intrusion detection in security setups. Its rugged metal casing ensures reliability in harsh environments, from industrial workshops to outdoor surveillance systems.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Light Sensitivity500–1000 lux+20% (600–1200 lux)+40% (800–1500 lux)
Response Time10 ms8 ms5 ms*
Operating Temp-10°C to 70°C-20°C to 85°C-30°C to 105°C

Supplier's note

  1. Technical Breakthroughs:

    • The Pro Model’s expanded operating temperature range (-30°C to 105°C) ensures reliability in extreme environments, such as industrial cold storage or outdoor solar setups.
    • The Advanced Model’s 20% wider light sensitivity range enables precise detection in low-light scenarios (e.g., night surveillance).
    • All models feature a metal case, reducing electromagnetic interference by 30% compared to plastic-cased sensors.

  2. Optimal Version Selection:

    • Base Model: Ideal for hobbyist projects or indoor applications (e.g., automatic room lighting).
    • Advanced Model: Suited for commercial automation systems requiring faster response times (e.g., smart office lighting).
    • Pro Model: Recommended for industrial or outdoor use cases demanding extreme durability and sensitivity (e.g., environmental monitoring in harsh climates).

With the Pro Model’s tripled temperature tolerance, you can deploy sensors in Arctic warehouses or tropical greenhouses. Pair its high sensitivity with analog output to create adaptive systems that respond instantly to light changes, ensuring seamless operation in any condition.

Frequently asked questions

  • Which LDR sensor suits home automation systems for light detection?

  • How to clean and maintain a photoresistor sensor for longevity?

  • CdS vs CdSe materials: Which is better for security systems?

  • Can I customize the LDR’s sensitivity for greenhouse light monitoring?

  • Is the analog output LDR compatible with Arduino projects?

  • What certifications ensure the LDR’s safety and reliability?

  • Which LDR suits outdoor light sensing in varying weather conditions?

  • Does the LDR support customization for underwater light detection?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionIndustrial environments, harsh conditionsIndustry: Generic semiconductor (ISO 9001)Our Base: CdS semiconductor (IEC 60711)Our Advanced: CdSe ▲ (ASTM E2231)
Response TimeSecurity systems, automationIndustry: 100ms (IEC 60711)Our Base: 50ms ▲ (IEC 60711)Our Advanced: 20ms ▲▲ (MIL-STD-810)
Sensitivity RangeEnvironmental monitoring, smart homesIndustry: 1 Lux–10,000 Lux (ASTM E903)Our Base: 0.1 Lux–10,000 Lux ▲ (ASTM E903)Our Advanced: 0.01 Lux–100,000 Lux ▲▲ (ISO 9050)
Operating TemperatureOutdoor applicationsIndustry: -10°C to 60°C (MIL-STD-810)Our Base: -20°C to 70°C ▲ (MIL-STD-810)Our Advanced: -30°C to 85°C ▲▲ (ISO 16750)
Package TypeMoisture-prone environmentsIndustry: Plastic case (IP54)Our Base: Metal case ▲ (IP65)Our Advanced: Reinforced metal ▲▲ (IP68)
Output StabilityPrecision measurement systemsIndustry: ±10% accuracy (IEC 60721)Our Base: ±5% accuracy ▲ (IEC 60721)Our Advanced: ±2% accuracy ▲▲ (NIST traceable)

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