Brand new & genuine, This Honeywell ST9400C 7 Day / 2 Channel Programmer can be used in conjunction with a wide range of Heating systems In The UK And Around The World. This Version replaces some of the following previous Honeywell Models: ST6400C1003, ST6400C1052.

• Now With LoTTM Technology
• Hos Largest ever Backlight Display
• Factory set Clock
• Automatic Summer/Winter time change
• 7 Day or 5/2 Day Operation
• Fits Industry standard Backplate
• Building Regulations compliant
• Backward compatible

1 year guarantee from the date of purchase if the product becomes faulty.