Wiring:The iWave-R includes a patented universal voltage 24VAC to 240VAC input functionality. The black wire (marked ‘AC’ on label) is for 24VAC to 240VAC voltage enter. The white wire (marked ‘N’ over the label) could be the neutral leg for 24VAC or 120VAC; or the other incredibly hot leg for 208/240VAC.Know your potential clients, donors