Czujnik drzwi and other 69,800 icons from Icons8 icon pack follow the visual guidelines of the operating systems: Windows, iOS, Android KitKat, and Material. PNG format is free up to 100x100 px. Icons are availble for download in PNG and vector (SVG, PDF, EPS, and more).
Its a logo of a rectangle door with a handle. Above the handle is a sensor that is also shaped like a rectangle, however much smaller because it is latched onto the door. To the right of this sensor, is another shape that is a little larger then the sensor, that is not on the door.