Digital tilt sensor, have simple function, if the sensor are not placed on a strict flat surface, the little steel ball in the green tube will slip to one end of it, so it will output 0 or 1 digital signal. Actually strong vibration can effect it's output, but generally speaking, it's about 3 degree to make it slip from one side to the other side. Then you could know that its tilt angle could not be adjusted.
KELENGKAPAN : - 1pcs ROBOTDYN DIGITAL TILT SENSOR MODULE