Wiring:The iWave-R features a patented common voltage 24VAC to 240VAC input capability. The black wire (marked ‘AC’ on label) is for 24VAC to 240VAC voltage input. The white wire (marked ‘N’ within the label) could be the neutral leg for 24VAC or 120VAC; or the other very hot leg https://donorprospectresearchsoftware.com/