Vent-Axia Trickle Boost Switch (455213)
A single gang switch to boost from high to low speeds on heat recovery systems or MEV systems.
Can also be wired for remote boost on constant trickle extractor fans (DMEV) that have two speeds.
85 x 85 x 10mm (H x W x D)
Vent-Axia part number 455213
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