Light Dependents Resistor Sensor(LDR) GL20528 - 20 mm

20mm LDR Sensor Photoresistor Light Dependent Resistor

This 20mm LDR Sensor is a high-sensitivity, epoxy-coated photoresistor designed to detect ambient light levels with excellent accuracy and speed. The resistance decreases as light intensity increases, making it ideal for a wide range of automatic light sensing and switching applications.

With a spectral peak around 560nm, closely matching the human eye’s response, this LDR is perfect for both indoor and outdoor environments. It's commonly used in night lights, streetlight automation, camera exposure meters, and other smart light systems, offering reliable and responsive performance.

📌 Key Features:

• Diameter: 20mm

• Spectral Peak Wavelength: ~560nm

• Light Resistance: 10–20kΩ

• Dark Resistance: ≤2kΩ

• Maximum Voltage: 500 VDC

• Maximum Power: 0.5W

• Response Time: 30ms (rise/fall)

• Pins: 2

• Coated with Epoxy for durability and protection

⚙️ Applications:

Analog Use Cases:

• Camera exposure control

• Toner density sensing

• Auto-focus lighting systems

• Display brightness control

• Industrial automation

Digital Use Cases:

• Nightlight automation

• Headlight dimming systems

• Flame and presence detection

• Beam-break sensors

• Smart streetlight controllers

Additional Uses:

• Light-sensitive alarms

• Toys and hobby electronics

• Light-following robots

• Solar-powered lighting

• DIY and education kits

📦 Package Includes:

• 1 × 20mm LDR Photoresistor Sensor