Wiring:The iWave-R contains a patented universal voltage 24VAC to 240VAC input ability. The black wire (marked ‘AC’ on label) is for 24VAC to 240VAC voltage input. The white wire (marked ‘N’ on the label) would be the neutral leg for 24VAC or 120VAC; or one other incredibly hot leg https://donorprospectresearchsoftware.com/