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Reading a few reviews on this claiming their fans splitter when using this to turn it down, that is probably due to the type of fan you use. On a standard clamp on 6'' fan it can hold the speed very well with no problems. Might have a slight hum from plug but not noticed that myself yet. On a centrifugal fan it seems ok, it won't come on until the power is turned up to 3/4 speed but it's still a lot slower (same as the clip on fan) Now on a cheap ass 12v fan it's a disaster it splutters away and is on full blast within a 1/4 turn. The fan is for up to 300w so I guess the better quality the fan the better the result with this. I've got to say I'm happy with this but I've only used it a few times yet. Time will tell but if you need a cheap solution for fan speed this is the one, also works with lamps.Read full review
Verified purchase: Yes | Condition: New
I purchased this for an inline fan , seems to have 2 working settings , on or off. After messing with the dial for 5 or 10 minutes to achieve the fan speed I wanted (or as close to as I could get) I left the fan for 30 minutes and returned to check the temperature , first thing I noticed was the smell of burning paint , the fan casing was too hot to touch and I feared that a fire was imminant!! This cheap piece of tat is now in the bin and I have ordered a 'proper' controller.'Buy cheap buy twice' certainly applies here.
Verified purchase: Yes | Condition: New
Do not be fooled by the product title. These are unfortunately, pretty much the same thing as the white versions meant for lamps. They do regulate fan speed but the make the fan motor buzz loud enough to be a nuisance. I bought both the white "lamp" versions of these and the black "fan" version in this review and they both have the same issue. The chopping frequency they operate at is well within the audible range and that means the fan motor buzzes as the dimmer is rapidly switching the supply on/off (PWM). Granted for a max power rating of 300W, maybe you wont be able to hear the fan motor buzz over the noise of the fan blades, but when you have a small 9 - 12 or 16 inch desk/ floor standing fan, at close proximity and you just want a light breeze, less than the fans lowest setting (why is it that 3 speed desk fans have such little variance between slow and fast speed?!?!), the motor buzz caused by these things is intolerable. I tried one in the office with a 12 inch desk fan where the slowest speed was too much and was giving me neck cramps, and colleagues two and three desks away in an average office were looking at my desk wondering why my fan sounded as if it was straining so much.Read full review
Verified purchase: Yes | Condition: New
This controller does work as stated, however I feel it would be better used as a light dimmer. It does work with a fan, but if you turn it down too low the fan could stop. What I mean by this is, if you were to turn it down low the fan may still work, but if it is oscillating it can slow down the fan enough to stop it without you noticing! Also it would be nice if there was an actual off switch on the unit. In summary, it does work, but I would avoid turning it down too Near the minimum setting.
Verified purchase: Yes | Condition: New
Light weight, compact, accurate speed control from motor stalled to full rev's, excellent value and rapid delivery.
Verified purchase: Yes | Condition: New