Honeywell-Resideo Totalhome CM927 CM921 CM727 CM721 CMS927 CMS927B1049 (Mk2 Replacement) Wireless Room Thermostat & Receiver TTHWFP – Hanicks
£87.00
Price: £87.00
(as of Jun 22, 2025 09:42:03 UTC – Details)
From the brand
At Hanicks, we understand the importance of keeping your home warm and comfortable. That’s why we stock thousands of boiler spare parts, ensuring you have everything you need to get your heating system back up and running quickly.
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The Pro Series Wireless Programmable Thermostat is a BRAND NEW 2021 launched, 7 day programmable room thermostat designed to replace all existing Honeywell CM Series Wireless Thermostats. The ‘Pro Series’ is made in the UK by Resideo (who were formally part of Honeywell International Inc.) and distributed by Hanicks Ltd.
The Pro Series Wireless Programmable Thermostat will replace the following Honeywell CM Series products: CM921, CMS921, CMS921B1042 CM927, CMS927, CMS927B1049 CM727, CMS727, CMS727E1016 CM721, CMS721
The Pro Series Wireless Programmable Thermostat works with the following Honeywell Wireless Relay Boxes: BDR91 HC60NG R6660D R8810A OpenTherm Bridge
Replaces all Honeywell CM700 and CM900 series wireless thermostats
Optimum Start & Stop saves energy and money by getting to the correct temperature at the correct time and turning off the heating early if the room temperature is correct.
Updated user interface provide modern ‘on-screen’ feedback
Built-in memory holds the user program indefinitely so that it is never lost – even if you remove the batteries
Easily binds to all existing Honeywell Wireless Relay Boxes. Comes with Instructions on ‘How to’ for your installation engineer.
Box Contains: 1x Pro Series 7 Day Programmable Wireless Room Unit 2x AA Alkaline Batteries 1x Wall Mount 1x Stand Mount
Customers say
Customers find the thermostat easy to set up, taking less than 10 minutes, and appreciate its build quality and value for money, with one noting it’s cheaper than hiring an electrician. The device receives positive feedback for its video quality and ease of fitting, and customers consider it a perfect replacement for Honeywell CM9 models. The functionality and temperature control features receive mixed reviews.
8 reviews for Honeywell-Resideo Totalhome CM927 CM921 CM727 CM721 CMS927 CMS927B1049 (Mk2 Replacement) Wireless Room Thermostat & Receiver TTHWFP – Hanicks
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£87.00
Amazon Customer –
Service
Great service from Hanicks,top quality item and service.Arrived on time with 24 delivery
A. C. Crabtree –
Safe and Reliable
Follow instructions regarding programming,take your time,enjoy the operation.
Andy at Nanyuki –
Effective replacement of old Honeywell CM921 wireless thermostat
I ordered this with some trepidation for self install. The LCD of the old item had become illegible. I was impressed that the new item was manufactured under the auspices of people who had designed and manufactured the old item. They said it could be paired with the existing receiver wired to the boiler without installing a new receiver. (Wiring up a new receiver is not a job I could take on, but a new receiver was included in the package).The instructions for pairing the thermostat with the receiver are on a short video which you have to access via a QR code with your smart phone.The video is excellent of its type. It is clear.If you are familiar with doing this sort of procedure it will be easy. Basically the pairing is done by pressing a series of presses of the buttons on both the thermostat and the receiver. The video plays quite quickly and the less able will find themselves going backwards and forwards trying to find the correct combination of presses of the buttons and keep track of where you are in the process. With patience and perseverance I proved it was possible to make it work.I canât say itâs reduced our gas bill but at least we have got back control and didnât have to call on professional help to do so â¦in that respect, good value.
Ceebee –
You need some technical skills.
YOU NEED some technical skills to replace one of these.House going cold so I looked at the wireless controller. Screen blank. Oh, batteries thought I. Changed batteries, and still dead. Tried to contact our heating service engineers, with no luck, so I ordered a replacement controller. Found out I need to watch a YouTube video to replace one, and even then, it took a couple of tries to replace it. It needs to be paired with the receiver relay. Fortunately, my receiver relay was compatible, but if it’s not, a new receiver is in the same box, which means some electrical skills to replace the old one.Paired the new controller with the old receiver, and still didn’t work. Took a second video to identify that when “paired”, the pairing needs to be saved to memory. (first video didn’t say this.)Tried pairing again, and the “save” option didn’t display. Tried again, and this time the “save” option did display. Saved it, and now working again. IT’S NOT JUST A CASE OF REPLACING THE UNIT.Identified that these controllers have two inherent problems. ONE. The display loses half its characters, due to the LCD losing some contacts with the circuit boards. TWO. The display goes dead, caused by deterioration of the ribbon connections between the back section, and the front section. (I hate ribbon connectors, having experience with them since the 70’s) I don’t think the quality of these devices, live up to the price charged for them. Inherent potential faults that should have been designed out by now.
Jon –
Easy to install wired central heating thermostat and programmable timer
Easy to install. Installation instructions are clear. Operating manual easy to understand. Batteries, screws and rawlplugs provided. Replaces old model which gave up the ghost and works fine.
Sears –
Replacement for CM927 Honeywell Thermostat
This is an absolute cracking bit of kit. Screen had gone on our old thermostat so could turn it on and off but not set temperature & set programs etc.This is a brilliant replacement. Easy to pair with our existing transmitter (although there is one in the box if you need it), easy to set up and works perfectly from the hallway at the bottom of the stairs to the boiler which is in the loft.Supplier also gives you a print of the QR codes to the installation video and instructions manual.All fixed and running in less than 10 minutes.
Amazon Customer –
Not as many features as older versions
Bought as a replacement for older version, paired up easily BUT no holiday function or mode to put on for just a hour. Not as good as the old one so returned and hoping my older version will hang in there!
Z164 –
Confusing
So this total home producr has a honeywell sticker over it so not sure what brand it actually is. Says it can replace honeywell CM927. The buttons on old one were sticking or not working so replaced with this and the signal doesn’t go as far as our old did, our boiler is in the out house and the control can only get signal by the back door 16ft away from the boiler. The old one would show a flame to say whether it was on this one doesn’t give you a signal so having to feel radiators to see if it is on or not which is frustrating. Can’t ask for refund as to get into product you have to break the sticker so not sure how that works either? Got someone to install it and will just have to see how it goes but not confident and could have lost a fair bit of money on it.