astral wall mounted switches are available in 1 and 2 gang versions for connection and control of 1 or 2 load circuits. They are suitable for flush or surface mounting in BS wall boxes with a minimum internal depth of 35mm and should be mounted in dry indoor locations only. Each astral switch also has the capability to control up to 5 other switches and/or dimmers. It will provide on/off control only, with all devices in the group turning on and off together. A 2 gang switch can control 2 groups.