Photoresistor LDR Light Sensor – 5 mm Cadmium Sulfide Cell for Arduino & DIY Electronics

Light‑dependent resistor (LDR) that changes resistance with ambient light—ideal for automatic night‑lights, solar garden lamps, and Arduino projects. 5 mm CDS cell offers fast response, wide 10 lux – 10 k lux range, and simple analog interface. Perfect for students, hobbyists, and makers building light‑sensing circuits, alarms, or energy‑saving controls.