A cover for switch is capable of mounting a frame thereon. A protruding portion, which protrudes from a mounting surface on which the frame is to be mounted, is provided with switch operation portions in the front face of the protruding portion. A first wall part, a second wall part and a third wall part are provided upright on the mounting surface, and have a first hole, a second hole and a third hole, through which projecting portions provided in the frame are inserted, respectively. A first raised claw and a second raised claw are provided on a protruding side positioned opposite to the first wall part and the third wall part, for the purpose of fastening a decorative cover for covering the switch operation portions.

The dual-switch housing is configured to secure two separate switches on a rail interface system and includes an actuator that allows an end-user to activate both switches individually or simultaneously. An example dual-switch housing comprises: a housing including rail clamp portions for removably mounting the dual-switch housing to the rail interface system; and an actuator configured to actuate the first and second switches individually or simultaneously. The actuator comprises a first actuation button configured to actuate only the first switch, a second actuation button configured to actuate both the first switch and the second switch, and a third actuation button configured to actuate only the second switch.