The unit can be purchased assembled ready for panel mounting, without the powerboard for assembly into equipment or in kit form (housing plus powerboard) These timers can be mounted on a flat surface such as a chassis plate or the rear surface of an enclosure. They cannot be directly mounted onto a wall or unenclosed surface. 67 x 67mm panel cut out CE marked in accordance with 73/23/EEC (LVD) and 89/336/EEC (EMC) Directives