Ceiling pull cord switches are normally used in bathrooms because it acts as a safety feature because you may have wet hands when operating the switch, therefore a cord as switch protects you from getting a shock. · · · 50.8mm fixing centres · · Mounting blocks are not supplied · · Use with 2051 WHI or 2056 WHI · · Suitable for installation in small circular conduit boxes to BS 4568 Pt 2: 1970 · · 1.5m switch cord · · These switches do not have to be derated when used with fluorescent or inductive loads