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£76.48 inc VAT

The DEVIreg Opti is an indoor room thermostat used for mounting flush with the wall. An electronic thermostat with a programmable timer.

Direct replacement for DEVIreg 550

FREE Next Working Day Delivery

About this product

The DEVIreg Opti is an indoor room thermostat used for mounting flush with the wall. It’s an electronic thermostat with a programmable timer, designed to fulfill Eco design directive.

The thermostat is primarily used for controlling electrical floor heating elements. The thermostat is designed for fixed installation only and has integrated frame.
The DEVIreg™ Opti is fast to setup and easy to operate, using buttons placed below the screen. It has an open window detection function, and energy-saving regulation program.

  •  Fulfiling the Eco design directive requirements
  •  Open window detection and indication
  •  PWM regulation function
  •  Weekly timer
  •  Low stand by consumption
  •  Always on, visible current room temperature
  •  Keeps user settings for up to 60 days
  • Direct replacement for DEVIreg 550

Warranty: 2 Years

Suitable for both Wet and Electric Underfloor Heating Systems

Technical Information


Download the datasheet with specification details for the DEVIreg Opti Thermostat here

DEVIreg Opti Thermostat Datasheet

Installation Guide

Download the installation guide for the DEVIreg Opti thermostat here

DEVIreg Opti Installation Guide



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We offer you free next working day delivery* on all small orders for our heating products to any UK mainland address.  If the order requires delivery via a pallet, the service will be free for 1-2 working days delivery and shown at checkout. 

Please note: this service excludes Ireland, Northern Ireland, Èire and the Scottish Highlands. Further to our standard delivery service, we are also able to offer a pre-10:30 am delivery service on any working day. However, this level of carriage does come with an added cost:


Standard next working day delivery

On orders before 3:30pm


Next working day pre 10:30am

  • Orders under £14 will incur a £6 charge
  • Delivery prices are subject to VAT

For bulky orders, we will arrange a pallet delivery on a 1-2 working day service. Costs may vary depending on the size of the order.  

Please note: To qualify for free next working day delivery, you must submit your order to us before 3:30 pm, Monday to Friday. Our free next-working-day delivery service excludes pallet deliveries. 

If your order is placed after the 3:30 pm cut-off on a Friday, it will be despatched on Monday for a Tuesday delivery. Bank holidays are considered non-working days and will be treated as such. 

Here at Cli-Mate, we make sure that all efforts are made to ensure that you receive your order on the next available working day. 

Please note: whilst we maintain strong relationships with our couriers and will do everything we can to ensure your delivery is with you the next working day (excluding pallet deliveries), some circumstances are beyond our control, such as traffic, weather, or unusual events. This may lead to unavoidable disruption to your delivery’s arrival date. We will not be held responsible for any costs that are incurred as a result of delayed delivery, and it is recommended that customers ensure the materials required by their contractors are on site prior to the commencement of any work. 

We are here to help. As such, in the case that your product has been delayed, we will use our tracking service to help keep you informed and up to date of the estimated time and date of your delivery. 

Should you have any query relating to your order or delivery please call 01284 339669 or email 

We can deliver to the Scottish Highlands, additional charges do apply and will be calculated at checkout.  Due to increasing custom charges we no longer ship to Ireland. If you require your order to be shipped to Northern Ireland or Ireland, arrangements can be made by prior agreement, please contact 01284 339669 to discuss with an account manager.

If you wish to collect your order from our warehouse, this must be done by prior arrangement, and collection can only be made once you have confirmation from our team that your goods are ready. Please do not turn up at our warehouse without prior arrangement and confirmation as you may be disappointed and turned away whilst your order is collated, and a collection time agreed.