Multiple-Sockets Outlet with time delay for motor starting and stopping function is used for anyone who operates a belt grinder, circular saw or piercing saw which with a vacuum device. When the main machine is switched on, the vacuum device switches will be on automatically after three to five seconds, and when the main machine is switched off the vacuum device will runs for more three to five seconds extracting the rest of the cutting dust. Different starting time can avoid the impact of inrush current.
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