DGC PRODUCTS i-Socket Intelligent Autoswitch with ports for Power Tool and Vacuum; PATENTED TECHNOLOGY delays Vacuum Turn-On/Off to Prevent Circuit Overload, Eliminating Circuit Breaker Tripping HOW IT WORKS. Patented automatic vacuum switch uses an on-Board Micro-Controller to monitor and control current when two large motors try to power-up at the same time. Prevents circuit overload by automatically delays vacuum turn-off by 7 seconds. EFFECTIVENESS. Runs the vacuum only when you are working so you save time and electricity. Reduces airborne toxin that can lead to many health problems. Reduces work area noise by running the vacuum only when you use your tool. BEST FOR medium duty workloads in the home workshop and on the job site. Its actuation threshold of about 0.7 amps (85 watts at 120V) makes it perfectly suited for most Miter Saws, Table Saws, Power Sanders and Routers and extends the life of your vacuum. ELECTRONICS. A software embedded micro-controller controls the in rush of current when the motor starts up to help eliminate overload of the circuit. Once the tool stops, it provides power to the vacuum for seven seconds to clean out the inlet pipe. TECHNICAL SPECS. Case: Durable UL-rated 94V, ABS plastic; Outlet required: Standard 15 Amp, 120 VAC, 60 Hz outlet; Power rating: 15 Amp, 120 VAC, 60 Hz; Input connection: 3 prong (grounded) male; Tool outlet connections: 2 or 3 prong plugs