The PV12I is a Powervertor from Alfatronix. It is a 12A/18A isolated convertor which converts 24v imput to 12v power output, all done using an off load current of >15Ma. The unit is IP53 rated meaning there are no ventilation holes to permit stray objects, dust or water to enter the unit. Is easilly installed using the click and fix mounting clip. Features a convienient LED light which indicates when there is an output from the convertor. Its dimensions are: 167mm x 87mm x 50mm.