GL10528 Photoresistor Sensor LDR 10-20KΩ 10mm
The GL10528 Photoresistor Sensor LDR 10-20KΩ 10mm is a light-dependent resistor that changes its resistance based on the intensity of light it detects. It typically has a diameter of 10mm, providing a broad light-sensitive surface area. Made usually from cadmium sulfide (CdS), its resistance decreases as light intensity increases, ranging from several megaohms in darkness to a few hundred ohms under bright light. It features high sensitivity, fast response, and good reliability, operating within a temperature range of approximately -30°C to +70°C. The LDR can handle maximum voltages up to around 250V and power ratings of up to 200mW depending on specific variants. Common applications include light sensing for automatic lighting controls, street lamps, security systems, camera exposure control, robotics, and various consumer electronics requiring ambient light detection or light-triggered switching. Its simple operation and large resistance variation make it suitable for many light detection and control circuits.
Features
- Diameter of 10mm providing a broad light-sensitive surface.
- Made primarily from cadmium sulfide (CdS) material.
- Resistance decreases with increasing light intensity.
- Resistance range: several megaohms in darkness to a few hundred ohms in bright light.
- High sensitivity to light changes.
- Fast response time.
- Operates typically within a temperature range of -30°C to +70°C.
- Maximum voltage rating 250V
- Power rating up to approximately 200mW.
- Commonly used for automatic lighting control, street lamps, security alarms, camera light exposure, and robotics.
- Simple and reliable operation for light detection and switching applications.
Dimensions
Specifications
| Parameters | Value/Range |
| Diameter | 10 mm |
| Material | Cadmium Sulfide (CdS) |
| Resistance (Dark) | 2MΩ |
| Resistance (Bright Light) | 10KΩ – 20KΩ |
| Sensitivity | High |
| Response time | Increase: 30msec
Decrease: 30msec |
| Operating Temperature | -30°C to +70°C |
| Maximum Voltage | 250V |
| Power Rating | 200 mW |
| Spectral Peak Response | 560 nanometer |
| Gamma value at 100- 10Lux | 0.6 |
Applications
- Ambient light sensing to detect light levels in indoor and outdoor environments.
- Automatic lighting control systems to turn lights on/off based on ambient light intensity.
- Camera exposure control, adjusting aperture and shutter speed according to lighting.
- Street light control for automatic switching when it gets dark or light.
- Robotics for obstacle detection, light source tracking, and navigation.
- Security systems for detecting movement via changes in light and triggering alarms.
- Industrial automation to detect object presence on conveyor belts or machines.
- Power-saving applications that turn off lights or appliances when rooms are empty.
- Night lights that automatically turn on in the dark and off in the light.
- Light-sensitive switches used in various automated systems responding to light changes.
- Solar tracking systems to optimize solar panel positioning for maximum light capture.
Package Contents
- 1 x GL10528 Photoresistor Sensor LDR 10-20KΩ 10mm
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