The Honeywell Home ST9400 programmer range for the independent control of both heating and stored hot water systems. Features user friendly text instructions (LoT™), large backlit display, automatic summer/winter change and override.
ST9400C is a 7 day programmer with up to three on/off switching per day and holiday function. (Direct replacement for ST6400 models).

Dimensions 99 x 145 x 35 mm.