SEALS VACUUM SYSTEM WHEN NOT IN USESPRING-LOADED ACCESS COVER FOR VACUUM HOSE CONNECTIONSENSING PINS CONTROL THE VACUUM UNIT"S POWER VIA THE HOSE"S TRIGGER RINGWHITEHIGH VOLTAGEUPC : 727066083678Shipping Dimensions : 8.00in X 5.00in X 2.00inEstimated Shipping Weight : 0.4819