Measure light levels with this sensor module. _x000D_This module uses a Light Dependant Resistor (LDR) to produce an output voltage that varies with light level. _x000D_Connect it straight to your Arduino to build a night/day sensor, a sun tracker or combine it with a laser module to make a laser trip wire.

• Operating Voltage: 3.3 VDC or 5 VDC
• Output: Analog voltage
• Pull-Down resistor: 10 K. , on board
• dimensions: 25 x 15 mm