We always recommend using a safety switch when operating the PantoRouter® which allows the operator to quickly turn the machine off by bumping the stop paddle with a leg or knee rather than removing a hand from the handle to find the router power switch. The NVR switch or No Voltage Release means that in the event of a power failure, circuit breaker trip, or other incident that cuts off the electrical supply to the machine while running, the switch will automatically default to the off position. When the power supply is restored, the router will not turn on until the “On” button is pressed once again. The switch comes pre-wired for standard US 110v-120v electrical supply. The switch is rated for 16amps. 68” long male cord to plug into an outlet, 22” long female cord for tool power supply.