Electrical switch device

An electrical switch device including:

• a switch housing having first and second compartments separated by a partition;
• an electrical switch assembly disposed in the second compartment;
• a control knob configured for seating adjacent to the first compartment, and having a user engagement portion and a plunger configured to extend from user engagement portion from the first compartment in to the second compartment via an opening in the partition separating the first and second compartments when the control knob is seated, and said plunger being configured for movable interaction with the electrical switch assembly to open and close an electrical switch of the electrical switch assembly in response to user-operable movement of the control knob amongst a plurality of operational positions;
• and
• a sealing member including a base portion configured for securing of the sealing member to the housing, and, a tubular portion extending from the base portion and configured to surround the plunger so as to alleviate ingress of liquid from the first compartment in to the second compartment via the opening in the partition, wherein a lip of the tubular portion of the sealing member is configured for being received within a notch or groove disposed in the control knob so as to effect securement of the tubular portion to the control knob, wherein the lip of the tubular portion is configured for snap-fitting engagement with the notch or groove disposed in the control knob.