Honeywell Home designed for control of a combi boiler or single zone, the Honeywell ST9100C one channel time switch is suitable for mains, low voltage or potential-free switching of a heating load. This seven day timer offers up to three on or off switching per day with the flexibility to programme each day differently with optional 5/2 or one day programming set up during install. The ST9100C's Line of Text (LoT) display gives clear instructions whenever any button or slider is touched, making everything, from installation to daily use, simple and confusion-free.

• LoT display provides text feedback help and programming hints
• Large backlit display
• Any programmed settings retained indefinitely in non volatile memory
• Automatic summer and winter 1 hour time change
• Temporary or permanent override facilities
• Extra hour facility for up to 3 hours boost or programme extension
• Operating temperature range 0C to 40C
• Fits on industry standard back plate
• Direct replacement for ST6100 models