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