Danlers TLSWHB Time Lag Heater Boost Switch. For control of electric heating loads [or other electric loads] Switches heating load on for a limited time only Pressing the button selects each time lag choice in turn The heating then remains on for the chosen time lag before switching off automatically The button can also be used at any time for selecting a different time lag or for switching Selectable time lags ¼ hour, ½ hour, 1 hour and 2 hours Loading up to 13A [3000W] of resistive load, or 6A [1500W] of transformer load Dispatched with 48hour courier Discount available for multiple units only