| Brand | Honeywell |
| Colour | White |
| Compatible Brand | Brother |
| Control Style | Digital, Push Button |
| Cool Stages | None |
| Features | Timer, Digital Display |
| Heat Stages | 1 |
| Material | Plastic |
| MPN | THR850SWE |
| Number of Periods per Programmable Day | 1 |
| Power Source | Corded Electric, Battery |
| Programmability | Programmable |
| Thermostat Programmable Days | 7- Day |
| Thermostat Shape | Rectangular |
| Voltage | 240 V |
| Voltage Type | Line Voltage |
Direct replacement for original programmer - fits onto wiring plate with no alterations needed.
It was a direct replacement for the old one which had failed after approximately 15 years. I fetched it and our boiler man did the swap and made sure it worked.
Very good hot water clock and easy to fit by professionals
Sadly I will have to return this as it's a wired-in one. I wanted one to replace my very old battery-operated one, and chose the wrong one by mistake. It loses stars for that information not being made clear on your page.
Appears when searching for ST9100C but online product details don't confirm compatability. Would be helpful/re-assuring.
great price and prompt delivery next day will use again
Great programmer for single channel use, easy to program and use
Diagnosed a fault with my almost 20 year old timer and this is a perfect replacement, even clips into the same fitting so no hassle at all to fit.
I bought this as a replacement for an older faulty unit which was over 10 years old. The new unit was a straight plug and play replacement which made it a really easy job to do. The new unit looks nice and has a few new features which I haven’t tried yet.
Feel s cheap, flimsy plastic
Great timer does what it says
Replaced a 30 year old Drayton timer. Very easy to wire, plenty of wiring space for 3c&e cable. Looks good. Can't comment on longevity as only just fitted but have other Honeywell controls that are approaching 20 years old and still functioning.
This is an excellent central heading time clock and is easy for the user to use
Good little timer, just wanted one to control heating only. good and simple to use and install
