Wiring:The iWave-R has a patented common voltage 24VAC to 240VAC input capacity. The black wire (marked ‘AC’ on label) is for 24VAC to 240VAC voltage enter. The white wire (marked ‘N’ around the label) is the neutral leg for 24VAC or 120VAC; or the other warm leg for 208/240VAC.We reserve the best to disclose any data as needed if that fact