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  • LM393 Photoresistance Photosensitive Sensor Module Detection Photoresistor Light Sensor Module
  • LM393 Photoresistance Photosensitive Sensor Module Detection Photoresistor Light Sensor Module
  • LM393 Photoresistance Photosensitive Sensor Module Detection Photoresistor Light Sensor Module
  • LM393 Photoresistance Photosensitive Sensor Module Detection Photoresistor Light Sensor Module
  • LM393 Photoresistance Photosensitive Sensor Module Detection Photoresistor Light Sensor Module
  • LM393 Photoresistance Photosensitive Sensor Module Detection Photoresistor Light Sensor Module
LM393 Photoresistance Photosensitive Sensor Module Detection Photoresistor Light Sensor Module
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LM393 Photoresistance Photosensitive Sensor Module Detection Photoresistor Light Sensor Module

  • 25 - 100 Pieces
    $0.24
  • 101 - 1000 Pieces
    $0.23
  • 1001 - 3000 Pieces
    $0.22
  • >= 3001 Pieces
    $0.21

Customization:

Customized logo（Min.Order: 100 pieces）
Product function customization（Min.Order: 1000 pieces）
Customized packaging（Min.Order: 500 pieces）
Graphic customization（Min.Order: 1000 pieces）
View product details

LM393 Photoresistance Photosensitive Sensor Module Detection Photoresistor Light Sensor Module

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Light Detection & Measurement: Equipped with a photodiode and LM393 comparator, the module detects ambient light intensity and converts it into analog output signals for real-time monitoring.
  • Threshold-Based Sensing: Enables customizable light-level detection thresholds, ideal for triggering actions (e.g., activating lights or alarms) based on environmental conditions.
  • Status Indication: An integrated LED provides visual feedback on power status and sensor activity, simplifying troubleshooting and operation.

Key features

  • 1. Durable Optical-Grade Material Technology

    • With a corrosion-resistant blue PCB and optical-grade components, you can ensure reliable performance in harsh or varied environments. The clear plastic lens and robust construction outperform basic sensor modules prone to environmental degradation*.

  • 2. User-Friendly Interactive Design

    • With an integrated LED status indicator and three-pin solderable connectors, you can easily monitor real-time operation and customize integration into breadboards or circuit boards, simplifying troubleshooting compared to non-indicative sensor designs*.

  • 3. Precision Analog Output Performance

    • With analog output capability, you can achieve granular light intensity measurements for sensitive applications like robotics or automation, offering finer control than digital-only sensors*.

  • 4. Versatile Scenario Solutions

    • Designed for obstacle detection, temperature sensing, and educational projects, you can deploy it in robotics, smart home systems, or learning kits—adapting to both professional and hobbyist use cases beyond single-purpose sensors*.

  • 5. Compliance with Safety Standards

    • Built with industry-standard electronic components, it meets foundational safety protocols for commercial and DIY projects*, ensuring reliability and peace of mind.

Product details

LM393 Photoresistance Photosensitive Sensor Module Detection Photoresistor Light Sensor Module

The LM393 Photoresistance Photosensitive Sensor Module is a compact, analog optical sensor designed for environmental light detection in automation, educational, and industrial applications. Its blue PCB construction and integrated LED indicator ensure durability and real-time status monitoring, while the three-pin interface simplifies integration into breadboards or custom circuits.

Technical specifications

FeatureSpecificationBenefit
MaterialBlue PCB with durable componentsEnhanced longevity and thermal stability
Sensor TypeAmbient light sensor (photodiode-based)Accurate light intensity measurement
CommunicationAnalog interfaceDirect compatibility with microcontrollers
Output TypeAnalog signalReal-time data for dynamic adjustments
Dimensions25mm x 15mm x 5mmCompact design for space-constrained projects
LED IndicatorStatus-indicating LEDVisual feedback for power/sensor activity

Customization guide

Adjustable parameters include:

  • Power Supply Range: Customize voltage (3.3V–5V) to match project requirements.
  • Pin Configuration: Solder pins for breadboard or PCB integration.
  • Sensitivity Threshold: Calibrate light detection levels via onboard resistors.

Get inspired

Use this module to create smart lighting systems, automated blinds, or educational robotics kits. Its analog output and compact size make it ideal for prototyping or industrial IoT applications where light detection is critical.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Sensitivity Range0–1000 lux0–2000 lux0–5000 lux*
Response Time50ms30ms (+40%)15ms (+70%)
Operating Temp-10°C to 70°C-20°C to 85°C-40°C to 105°C*
Noise ImmunityStandardEnhancedMilitary-grade

Supplier's note

  1. Technical Breakthroughs:

    • The Pro Model’s 5000 lux range exceeds industry benchmarks, enabling use in high-brightness environments like outdoor sensors.
    • The LED indicator allows real-time status monitoring, reducing debugging time by 30%.
    • The compact PCB design cuts project size by 20% compared to traditional modules.

  2. Version Selection Guide:

    • Base Model: Ideal for hobbyists and educational projects (e.g., DIY light-activated switches).
    • Advanced Model: Suitable for industrial IoT and robotics requiring faster response times (e.g., automated warehouse lighting).
    • Pro Model: Best for extreme environments (e.g., outdoor solar panel systems) with its wide temperature tolerance and noise immunity.

Example Use Case: With the Pro Model’s 15ms response time, you can create a responsive obstacle-avoidance robot that adapts instantly to changing light conditions. Pair its high sensitivity with a microcontroller to automate industrial lighting systems, cutting energy costs by up to 25%.

Frequently asked questions

  • Which LM393 sensor module suits home automation or robotics projects?

  • How to clean the LM393 sensor’s lens without damaging its components?

  • What’s the difference between photoresistor and photodiode in LM393 modules?

  • Can the LM393 module be customized for battery-powered projects?

  • Is the LM393 module RoHS-compliant and suitable for industrial use?

  • How does the LED indicator aid in debugging the sensor module?

  • What applications are best for the LM393 analog output sensor?

  • Can this module be used outdoors for environmental light sensing?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Optical SensorsLighting control systems, ambient light detectionIndustry: Analog output (0-5V)Our Base: ±10% accuracy (IEC 60721)Our Advanced: ±5% accuracy (▲) (ISO 17353)
Automation systems, IoT devicesOur Base: 500 lux detection range (IEC 61746)Cost-effective, easy integration with analog circuitsLimited to visible light, requires external power supply
Educational projectsOur Advanced: 2000 lux (▲) (ASTM E2034)Higher precision for industrial applicationsSensitivity drift in extreme temperatures

| Infrared Sensors | Proximity detection, obstacle avoidance | Industry: Range up to 1m (ASTM F2413) | Our Base: 0.5m range (IEC 60947) | Our Advanced: 2m (▲) (ISO 16002) |
| | Security systems, robotics | Technology: IR LED emitter/receiver | Non-contact sensing, operates in low-light conditions | Susceptible to ambient light interference |
| | Environmental monitoring | Our Advanced: ±2% accuracy (▲) (ASTM D543) | Enhanced reliability for industrial use | Higher power consumption |

| Temperature Sensors | HVAC systems, environmental monitoring | Industry: ±1°C accuracy (ISO 16002) | Our Base: ±0.5°C (IEC 60721) | Our Advanced: ±0.1°C (▲) (NIST traceable) |
| | Automotive diagnostics | Range: -55°C to +150°C (ISO 16750) | Linear output, rugged design | Slower response time compared to digital sensors |
| | Industrial automation | Our Advanced: Response time <2s (▲) (ASTM E115) | High precision for critical applications | Calibration required periodically |

| Pressure Sensors | Industrial machinery, automotive systems | Industry: 0-100 psi (NIST traceable) | Our Base: ±2% accuracy (IEC 60947) | Our Advanced: ±0.5% (▲) (ISO 16002) |
| | Medical devices, aerospace | Durability: IP67-rated housing (IEC 60529) | Wide operating range, shock-resistant | Higher cost compared to basic sensors |
| | HVAC systems | Our Advanced: 0-500 psi (▲) (ASTM F1921) | Versatile for high-pressure applications | Sensitivity to vibration |

| Humidity Sensors | Climate control, agriculture | Industry: 0-100% RH (ASTM E337) | Our Base: ±5% RH accuracy (IEC 60331) | Our Advanced: ±2% RH (▲) (ISO 16002) |
| | Indoor air quality monitoring | Response time: <15s (IEC 61340) | Compact design, low power consumption | Prone to condensation damage |
| | Food storage systems | Our Advanced: 0-100% RH (▲) (ASTM E2015) | Improved durability in humid environments | Calibration needed in extreme humidity |

| Proximity Sensors | Industrial automation, robotics | Industry: Detection up to 10mm (IEC 60947) | Our Base: 5mm range (IEC 60335) | Our Advanced: 20mm (▲) (ISO 16002) |
| | Safety systems, conveyor belts | Technology: Inductive or capacitive | Non-contact operation, long lifespan | Only detects metal objects (inductive) |
| | Consumer electronics | Our Advanced: ±0.1mm accuracy (▲) (ASTM F2948) | High precision for precision robotics | Susceptible to electromagnetic interference |

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