LDR Sensor (Light Dependent Resistor) 5mm | Photoresistor Light Sensor | CDS Light Sensitive Resistor for Arduino, ESP32, Raspberry Pi & DIY Electronics
⭐ Key Features
🌞 Highly Light Sensitive – Changes resistance according to the intensity of light, making it ideal for automatic light detection applications.
💡 Cadmium Sulphide (CdS) Photoresistor – Built using high-quality CdS photoconductive material with spectral response similar to the human eye.
⚡ Reliable Performance – Low resistance in bright light and high resistance in darkness for accurate light sensing.
🔌 Easy Through-Hole Mounting – Standard 5mm through-hole (PTH) package makes soldering and prototyping simple.
🤖 Microcontroller Compatible – Works seamlessly with Arduino, ESP8266, ESP32, Raspberry Pi, NodeMCU, STM32, PIC, AVR, and other development boards.
🛠️ Perfect for DIY Projects – Suitable for electronics experiments, IoT projects, robotics, automation, and educational kits.
📏 Compact 5mm Design – Small size allows easy integration into compact electronic circuits.
📚 Ideal for Learning Electronics – Excellent component for students, hobbyists, makers, and engineers.
📝 Product Description
The 5mm LDR (Light Dependent Resistor) is a highly sensitive Cadmium Sulphide (CdS) photoresistor designed to detect changes in ambient light. Its resistance decreases as light intensity increases, making it an ideal sensor for automatic lighting systems, security devices, robotics, and IoT applications.
This through-hole LDR is easy to integrate into breadboards and PCBs, making it perfect for beginners and professionals alike. Whether you're building an automatic street light, light-sensitive alarm, or an Arduino-based smart project, this sensor offers reliable and consistent performance.
📦 Package Includes
1 × 5mm LDR (Light Dependent Resistor)
📋 Specifications
Feature
Details
Product Type
Light Dependent Resistor (LDR)
Sensor Type
CdS Photoresistor
Disc Diameter
5 mm
Light Resistance
5–10 kΩ
Dark Resistance
Up to 500 kΩ
Mounting Type
Through Hole (PTH)
Maximum Operating Temperature
80°C
Material
Cadmium Sulphide (CdS)
Output
Analog Resistance Change
🎯 Applications
✔ Automatic Street Lights
✔ Day & Night Detection Circuits
✔ Arduino Projects
✔ ESP32 & ESP8266 Projects
✔ Raspberry Pi Projects
✔ IoT Applications
✔ Light Intensity Measurement
✔ Burglar Alarm Systems
✔ Smoke Detection Circuits
✔ Solar Garden Lights
✔ Automatic Room Lighting
✔ Robotics Projects
✔ Batch Counting Systems
✔ Educational Electronics Kits
✔ DIY Electronics Projects
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