Getting into electronics or robotics? These LM393 light sensor modules are super handy for detecting light levels. You get 10 of them, so you can experiment or use them in multiple projects. They work with both 3.3V and 5V inputs, making them compatible with Arduino, Raspberry Pi, and other microcontrollers. Just connect the pins and read the analog/digital output. They're unbranded/generic but function well for hobbyist use. Brand new, made in China. Perfect for building automatic night lights, light-sensitive triggers, or weather stations. A cheap and easy way to add light sensing to your DIY creations. Stock up and start tinkering!