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