This is an extremely small yet powerful light sensor. Also known as a photodetector, photo resistor, CdS or photoconductive cell, a photocell alters its resistance based on the amount of light it receives. These tiny sensors are excellent for triggering actions according to ambient light levels, like performing a task when the room lights turn on. Key features include a light resistance of around 1k Ohm, a dark resistance of about 10k Ohm, a maximum voltage of 150V, and a maximum power of 100mW. The dimensions are 2 x 4 x 5mm, with 4mm between pins and a 31mm lead length. Available documents are the Datasheet, Hookup Guide, and Bildr Tutorial.
Using this compact photocell is easy. First, connect it according to the hookup guide. You can use it to detect changes in ambient light and trigger other devices or actions. For example, you can set it up to turn on a small fan when the room gets bright. When handling, avoid applying a voltage higher than 150V or power greater than 100mW, as this could damage the sensor. Keep it away from extreme heat or moisture to maintain its performance. To clean it, gently use a dry cloth. Check the datasheet for more detailed specifications and usage scenarios.
