... , The A feet and B feet will be a closed circuit ”ON-stated”. When the products of horizontal placed tilt change ... , the B feet and C feet will be a closed circuit “ON-stated”In a horizontal position, be easy to trigger ... SWITCHESMaterialRoll Ball, Tube, Spring,Type Vibration sensor switches /Roll ball tilt switches /Optical roll ball sensor/ Mercury switchesFinish Nickel-plated, silver-plated ...