It is a single gang switch with a 45Amp rating, which means it can handle the high current draw that a cooker requires. The neon spur is a built-in neon light that indicates whether the switch is on or off, providing a visual cue for the user. This type of switch is commonly used in kitchens and other areas where cookers are installed, providing a safe and convenient way to control the power supply to the appliance. It is usually installed on a wall near the cooker, and it may be required by electrical regulations in some areas.