Timeguard 4 Hour Electronic Boost Timer & Fused SpurAutomatic timer countdown selection for up to 4 hours 13A (3kW) loading. Ideal for immersion heaters, room heaters, towel rails and lighting. Replaces existing single gang connection unit or fixed appliance outlets. box min. 25mm deep. Up to 5 on times can be selected: hour, hour, 1, 2 and 4 hours. Easy push button selection with clear LED output status. Provides timed output protected by a BS1362 fuse switch. Fits a standard flush or surface mount BS