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Herschel’s TRV controller for central heating “wet” radiators. Can be used on their own as an independent radiator controller, or in combination with other Herschel iQ controls via the iQ Link [Hyperlink] as part of your whole building management solution.
The iQ TRV has on-off and “boost” modes with a linking function (to discover an iQ Link unit).
See our Herschel iQ Simple Starter guide for more information.