The 701 offers a contour lock system, allowing it to be a stand alone unit, or locked together with other switches. It also features a control knob which cannot be removed while in the ON or OFF position, however can be removed by switching to an anti-clockwise 45º position. The control knob also features an interchangeable labeling system allowing a full range of applications. It also includes a removable rear cover which insulates the terminals against any short circuits and ensures the switch meets ABYC requirements. Can be either surface or recess mounted by cutting a 2 1/16" (52mm) hole. Tin plated copper studs and nuts.