Pull Chain Switch:SK-SI

Model NO. : SK-SI Type : 2 Range : AC 110V 1A /AC220V 0.5A Contact Resistance : 50m ohm, Min Insulation Resistance : 10m ohm, Min. Dielectric Strength : AC 1,500V/Min. Contact Material : Copper or Copper alloy Life : 5,000cycle. Min Weight : 16g This switch is only for ventilator.If you pull the string down, then motor fan will be turned on immediately and a ventilation fan is opened. So, it prevent the dust or polluted air from outside when it is not used.