Horstmann CentaurPlus single channel timeswitches offer up to three on/off periods a day with a one hour boost and instant advance facility.
Installation and connection should only be carried out by a suitably qualified person and in accordance with the current edition of the IEE wiring regulations.
WARNING: Isolate mains supply before commencing installation.
Centaurplus Hortsmann C11 & C17 Programmers Series 2 Manual 2016-08-20
Centaurplus Hortsmann C11 & C17 Programmers installation instructions