WCam switch
WThe Clapper
WCryotron
WDIP switch
WElectric switchboard
WFloat switch
WKey switch
WKnife switch
WKosherSwitch
WLight switch
WMagnetic starter
WMagnetic switch
WMembrane switch
WMercury switch
WMiniature snap-action switch
WPull switch
WPush switch
WPush-button
WReed switch
WRotary switch
WStaircase timer
WThermostat
WTime switch
WTransfer switch
WTrue DC
WVandal-resistant switch
WWireless light switch
WWiring diagram