If you want a simple to use and uncomplicated controller for your extractor fan, this excellent device from GSE certainly ticks all the right boxes!
It provides you with a no-nonsense approach to fan speed management, whereby you use the two dials to set the minimum fan speed and the desired temperature setting.
The fan will then be made to run at full speed until your grow room reaches the desired temperature, at which point the controller keeps it ticking over at the minimum fan speed.
Reliable and ready to go out of the box, this highly affordable GSE controller gets a thumbs up from us!
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