C-Line Twin Switch 12V & Pump Dark Grey - PO267 The C-Line 12V and pump switch unit is a 12v master switch and water pump/water pressure switch with an LED. The switches are simple on/off switches. Compatible with C-Line products and faceplates, for use in campers, caravans and motorhomes. The double switch unit comes pre-wired, ready to install. Made from a durable, hardwearing plastic. Easy to install with four screws at each corner, simply fit to your flat surface. 5060070228549