The RM Series roller ball tilt sensor switches, that contain no mercury, and their sense tilt angles and vibration sensors use gold-plated contact balls.
They are available in two models, one with a 10° tilt angle, and the other with a 45° tilt angle. Contact rating is 0.4-V at 20 Vac or dc, life cycle is over one million operations, and vertical and horizontal printed-circuit board mounting options are available.