public class OutControl
    {
        //---------Первая группа---------//

        public const byte Call = 0x00;
        public const byte Nop = 0x01;
        public const byte Alarm = 0x02;
        public const byte Warning = 0x03;
        public const byte Nol = 0x04;
        public const byte Action = 0x05;
        public const byte Pull = 0x06;

        //---------Вторая группа---------//

        public const byte Push = 0x00;
        public const byte Buzzer = 0x01;
        public const byte Temp = 0x02;
        public const byte Ring = 0x03;
        public const byte SwitchOff = 0x04;
        public const byte SwitchOn = 0x05;
        public const byte Reverse = 0x06;
        public const byte Reserve = 0x07;

        //-------Опкоды для записи в определенный блок------//

        public const byte FirstBlock = 0x06;
        public const byte SecondBlock = 0x07;
    }

static void Main(string[] args)
    {
        Facade facade = new Facade();

        facade.SetData(Model.OutControl.Buzzer, true);
    }

public class Facade
{
    private Model.OutControl _outs;

    public Facade()
    {
        _outs = new Model.OutControl();
    }

    public void SetData(byte outs, bool action)
    {
        switch (как можно перелючать?)
        {
            case ?:
                _outs.Set(Model.OutControl.FirstBlock, outs, action);
                break;

            case ?:
               _outs.Set(Model.OutControl.SecondBlock, outs, action);
                break;
        }
    }
}