BCA Original Equipment. 1 x PDU Power Distribution Unit. The complete 12 volt power supply unit, a fully automatic supply direct to caravan appliance and electronically controlled battery charging. Please Note: This product is not intended to replace existing units, New fit only, if you require a replacement unit to match the one fitted in a Caravan or Motorhome please contact your sales representative or BCA Leisure Group. As used in Bailey, Elddis-Hymer, Coachman, Lunar etc.