Photocells are sensors that allow you to detect light. They are small, inexpensive, low-power, easy to use and don't wear out. For that reason they often appear in toys, gadgets and appliances. They are often referred to as CdS cells (they are made of Cadmium-Sulfide), light-dependent resistors (LDR), and photoresistors.
Adjustable sensitivity Analog Photocell Brick allow you to adjust sensitivity of analog Photocel to get digital signal or set a trigger value.
It's all the same use with Analog Photocell Brick.
News: All of Octopus bricks has supported Scratch programming. ElecFreaks builded EFBlock support drag and drop programming . Guide please check here