20 PCS GL5528 5mm Photoresistor LDR Sensor

The Photoresistor-5528 is a GL5528 light dependent resistor supplied as a five-piece pack of 5 mm CdS photoresistor sensors. Its resistance falls as illumination increases, dropping to roughly 10–20 kΩ at 10 lux and rising to about 1 MΩ in complete darkness, which makes the 5mm LDR sensor a simple analog light sensor for automatic lighting, security detection, and exposure control. The spectral peak is 540 nm, close to the human eye response, and the rise and fall times of about 20 ms and 30 ms allow the device to follow moderately fast changes in ambient light. Maximum voltage is 150 V DC, maximum power dissipation is 100 mW, and the operating temperature range is -30°C to +70°C, so the CdS photoresistor suits both indoor and sheltered outdoor use. Each sensor has two leads and a 5 mm cylindrical body, and the pack provides five units for multiple builds or replacements. Typical applications include automatic street and garden lights, camera and display brightness adjustment, motion and presence detection, and light-level logging in Arduino and microcontroller projects. This GL5528 photoresistor is a low-cost, widely supported light sensor for prototyping and production alike.

1. Automatic street, garden, and security lighting that switches on at dusk.
2. Camera and display automatic exposure and brightness adjustment.
3. Motion and presence detection systems using a light dependent resistor.
4. Light-level logging and ambient sensing in Arduino and microcontroller projects.
5. Smart home and energy-saving lighting control.

1. Model: GL5528 (Photoresistor-5528).
2. Sensor type: CdS light dependent resistor (LDR).
3. Body diameter: 5 mm.
4. Number of leads: 2.
5. Light resistance at 10 lux: 10–20 kΩ.
6. Dark resistance: approximately 1 MΩ.
7. Spectral peak wavelength: 540 nm.
8. Rise time: approximately 20 ms.
9. Fall time: approximately 30 ms.
10. Gamma value: 0.6 (some datasheets state 0.65).
11. Maximum voltage: 150 V DC.
12. Maximum power dissipation: 100 mW.
13. Operating temperature: -30°C to +70°C.
14. Pack quantity: 5 pieces.