The 701 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 45 position. The 701 also features removable side plates on 4 sides for access of up to I/O cables plus a rear cover insulating the rear terminals against any short circuits. This ensures the switch meets ABYC requirements. The 701 can be either surface or recess mounted by cutting a 52mm hole (2.1 inches).