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Drayton SM2 Two Channel Mechanical Programmer 29206 Display Module Baxi Insulation Pad assembly isThe Drayton SM2 dual channel electro mechanical programmer gives style and ease of use to suit most domestic pumped and gravity heating systems. Designed for gravity and pumped systems Independent heating and hot water programming Advance feature 4 Position slide for ease of setting 2 On and off periods per day Industry standard wall plate All day option Fits on a universal backplate Manufactured in UK