Keyes Brick 2Pcs Magic Light Cup Sensor Modules(pad hole) with Pin Header Digital Signal

Description:
This sensor is a sensor compatible with Arduino to interact with it. The principle is to use PWM principle of dimming, the brightness of the two sensors changes. The ball switch provides a digital signal to trigger the PWM adjustment. Through the design of the program, we can see the effect similar to the upside-down of two cups filled with light. The sensor comes with 2 positioning holes, which is convenient for you to fix the sensor to other equipment.
Specifications:
Working voltage: DC 3.3-5V Interface: 4PIN interface Input/Output signal: digital signal Size: 34*22*17mm
Package Included:
2 x Magic Light Cup Sensor (the other items are not includes)