Drayton RF601 Thermostat Switch
The Drayton RF601 works with the large majority of boilers from many of the well known makes including Baxi, Worcester, Vaillant and Viessmann. Ultimately the RF601 is just a switch / manual temperature adjust. It is not a programmable timer. Although it can be used in a similar fashion in the sense that it can be set to come on when the temperature reaches a low point. For example: if this option is set to 20 degrees C and the temperature goes lower than that, the RF601 will activate and stay on until the desired level is achieved. It can also be set similarly with max temperature also. There’s also an override option and it comes with a 1 year warranty.
This unit is very reliable and has a great review score / track record for accuracy. Very basic and simple to operate. The RF601 wireless frequency band is @ 433Mhz. Comes with both the digital / dial controller combination unit and the receiver. PDF manual / user / installation guide can be read / downloaded here. If you’re looking for something similar to the RF601 but need a model that offers more features in terms of on / off periods, such as 7 day timer programming, take a look at the Drayton RF701.