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.
Related to Door Sensor Icon
Related icons are the icons with matching tags, as well as all security icons. All icons are in the same flat style. You can either download free PNG icons or buy SVG vectors