The Honeywell Home ST9400C is a 7-day twin channel programmer designed for independent control of heating and stored hot water in complete systems, enabling maximum energy efficiency. It offers up to three ON/OFF switchings per day, plus each day can be programmed differently on a 5/2 or 1 day basis  making it ideal for users whose heating needs vary from day to day.

• Fully compliant with Building Regulations Part L1 for England & Wales and Part J for Scotland
• Large backlit Line of Text (LoT) display for helpful text feedback
• Factory-set clock and date
• Automatic summer/winter adjustment
• Choice of 3 different built-in programmes
• +1 facility for up to 3 hours boost or programme extension
• Up to 3 ON/OFF times per day
• Holiday button
• Superseded the ST6400C