Specialty switches are specialty or proprietary products and accessories related to switches. Major types of specialty switches are limit switches, proximity switches, transfer switches, a temperature switch, and rocker switches. A limit switch is a protective device, which opens or closes electrical circuits when the position of a device crosses the specified physical limit. A proximity switch is a switch that can detect its relationship with a metal target without making any physical contact and then it can be tripped accordingly. A transfer switch is a switch, which can transfer electrical power between two power systems or buses. A rocker switch is a switch, which is operated by touching the top or the bottom of the control plate. A rocker switch can be a maintained or momentary type. Another important type of specialty switches is a temperature switch, which can open or close a conductive path according to the temperature.