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