Honeywell ST9400C 7-Day Electronic Programmer with 2-Channel

Easy retrofit

Fits on the older backplates, with all the new features. Not quite as simple to use as the older ones, but a lot more flexible

Verified purchase:  Yes • Condition: new • Sold by: bocubi84

Replacement for. Existing thermostat xx fresh horses 👍

Verified purchase:  Yes • Condition: pre-owned • Sold by: jpbowlespandh

simple to use timer

it fitted easily to replace previous timer. 2 min to wire backplate, then clip on timer, job done.

Verified purchase:  Yes • Condition: pre-owned • Sold by: njamick87

Perfect

Replaced old type with this updated version. Works a treat. Thanks. Easy to use.

Verified purchase:  Yes • Condition: new • Sold by: borderspares

Simple replacement

Perfect replacement for old one easy to fit just two screws and fits direct to back panel no wiring needed

Verified purchase:  Yes • Condition: pre-owned • Sold by: in-stock-fast-d...

Improved control optons

Bought to replace 23yr old 6400C - does everything better

Verified purchase:  Yes • Condition: new • Sold by: thegolfer45

Programmer

Ordered it to replace my existing programmer, came quickly and great price compared to everywhere else.

Verified purchase:  Yes • Condition: pre-owned • Sold by: nitrosolate

Rubbish

Product was faulty and wouldn’t set very disappointed

Verified purchase:  Yes • Condition: pre-owned • Sold by: renser-19

Easy to fit

It does the job, as expected, nice intuitive adjustment procedures, but the magic thing is that the business end slots into the backplate of its 20-year old predecessor, so no fiddling with cables, just slot the old one out and the new one in.Read full review

Verified purchase:  Yes • Condition: new • Sold by: borderspares

Honeywell timer

Retro fit for an older model. Just clipped on boiler fired up and problem sorted less than 2 mins. Even the time was corrrct.

Verified purchase:  Yes • Condition: new • Sold by: renewableproduc...