readAttributeMeasured1stHarmonicCurrent(completion:)
Declaration
func readAttributeMeasured1stHarmonicCurrent(completion: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeMeasured1stHarmonicCurrent() async throws -> NSNumberfunc readAttributeMeasured1stHarmonicCurrent(completion: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeMeasured1stHarmonicCurrent() async throws -> NSNumber