We are offering pressure switch.Vacuum switch controllable hysteresisfield adjustable vacuum set pointsnap action basic switchsmall size, lightweight, low costfield adjustable vacuum set point, from -3 h2o to -12 psi(-2 h2o available as fixed set point)snap action basic switch, up to 25a*, 125250 vac*not available on all ranges.250 diameter; 18 npt; or 14 quick connect fitting portcustom design and engineering availablesmall size, lightweight, low relative costdependable long life (10+ million cycles)