These aircraft style switch guards are designed for use with the LMA range of heavy duty on/off metal toggle switches. When the guard is in its closed position, the toggle switch can be in the down position preventing any accidental starting. With the guard open, the switch can be use as normal, however, when the guard is closed again it automatically shuts the switch off again. Available in a range of colours, allowing you to colour co-ordinate or organise your switches.