Mercury Plug-In Dimmer Switch | Adjustable Light Control for Lamps & Fans | Works with LED, Filament Bulbs | UK 3-Pin Mains Socket | Smart Dimming | White

Plug-and-play simplicity. This dimmer switch slots straight into a standard UK socket and gives smooth control over lamp brightness—ideal for filament bulbs and compatible LEDs. No buzzing, no flicker, and the dial’s responsive without being twitchy. Used it with a few table lamps and it handled them well. Build feels solid, and the white finish blends in without drawing attention. Great for setting mood lighting or just knocking the brightness down in the evenings. No wiring, no faff—just works.

Excellent and thanks!

If you have dimmable bulbs, this little gadget works a treat. The dial knob is a little insensitive, and seems to go from 0-10 brightness rather suddenly, but it's worth noting that I'm not an electrical expert, so I can't be sure if the dial would operate better on a different lamp, or using different dimmable bulbs. Having said that, it does the job and we only want to keep our lamp on one brightness level. Just make sure the bulbs are actually dimmable and you'll be fine.

Bought this device several months ago, and until recently it did a perfect job in dimming a table lamp. One day, when I turned on the lamp, it turned on for a moment and then gone both the bulb filament and the dimmer. I tried to repair it, however, I discovered that the screws holding the appliance are non-standard, and without a special tool one cannot open it (see picture attached). I decided to sacrifice the thing and cracked it open. It turned out that its circuit does contains a fuse which is gone (picture attached). However, instead of being placed in a holder, so that one could easily swap it with a new one, this fuse is soldered into the PCB board. The series of events was pretty clear now - the incandescent was nearing the end of its lifetime, the moment it was going out, it caused a surge in current causing a blown fuse. Overall, I was somewhat disappointed to discover that such a simple device is designed in a way to render it unrepairable: first, one cannot open it using standard tools, second, the fuse is soldered in. I cannot explain it by anything, but a company's deliberate plan to make it so, and force you to buy a new one, after your old one is gone. This is a good example of planned obsolescence, which is not unheard of these days. I was just surprised to find this in such a simple device. It worked only for several months, which is quite frustrating. All these numerous poor reviews of people complaining about short lifespan totally makes sense to me now.

I gambled on buying this dimmer control, knowing from other reviews, that the device did not work with everybody's lamps. REVIEW SUMMARY Build quality feels good, but, INITIALLY it did not work with either of my LED lamps. However just before posting my initially prepared review, I thought the fault I was experiencing may be due to me using an inappropriate light bulb. This suspicion was confirmed by the dimmable controller working perfectly after I change the light bulb I was using in the lamp. To be fair, my final rating is based only on using the dimmer controller with the light bulb sold as "Dimmable" and the dimmer controller's build quality. ____________________________________________ DETAILED REVIEW I have two LED lamps and will describe how they each functioned separately. LAMP INITIALLY FITTED WITH, STANDARD LED LIGHT BULB - For dial positions within the, "LIGHT FLICKERS ZONE", (see images 1 & 2), using the standard LED light bulb (see images 3.1, 3.2, 3.3), the light flickered at a visibly high frequency, (see first part of video). - For ALL dial positions BELOW the, "LIGHT FLICKERS ZONE", the flickering stopped BUT the brightness was fix dim, as shown in image 5 and NOT of variable brightness. - For ALL dial positions ABOVE the, "LIGHT FLICKERS ZONE", the flickering stopped BUT the brightness was fix bright, as shown in image 6 and NOT of variable brightness NOTE - My camera's exposure setting was locked the same, between images 5 and 6. Same LAMP THEN FITTED WITH A, DIMAMABLE LED LIGHT BULB (sold as "Dimmable bulb" - see images 9.1, 9.2, 9.3) - NOW WORKS PERFECTLY! From DIMMEST most dimmable position, (dial turned to far left), where the light bulb was completely off, to the BRIGHTEST position, (dial turned to the far right), where the light bulb was at it's brightest, the increase in brightness was smooth and gradual as should be expected, with NO flickering and NO pulsating. So, one more time, for the record, with the correct light bulb, (sold as, "Dimmable bulb" - see images 9.1 and 9.2, 9.3), the dimmer controller worked perfectly. I have no video of the smooth increase in lighting described here, as I did not have the time to take another video, and then blend it into the already created video, to create a single video, (video upload limit here is one video per review); this section of testing actually occurred last, as an afterthought, just before posting what I now know would have been my initially more limited and not fairly representative review, lacking all relevant facts needed for a fair review. _ _ _ _ _ _ _ _ _ _ _ _ WITH FLAT LED LAMP (Tomshine Led Floor Lamp Remote & Touching Control https://www.amazon.co.uk/gp/product/B082LRF5WP/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1 ) - For dial positions within the, "PULSATION ZONE", (see image 7), when using the flat LED lamp light, (see flat LED lamp head in images 8.1, 8.2, 8.3), the light pulsated slowly, (see the second part of video). ____________________________________________ I hope will be helpful for many of you out there.

Delivered promptly & I'm sure it works as described but unfortunately not for me and the use I had intended it for. Recently bought a new floor lamp which is too bright so I bought this dimmer hoping for the best. As soon as I turn the dial the lamp starts flickering & this is even more off putting than the lamp being too bright, I think this is down to the energy saving bulbs in the lamp. The dimmer was reasonably priced & was bought out of hope really so I don’t think I’ll be returning it, it may be used in the future for something else? Keeping my eye out for lower wattage bulbs now - 🤫

I am satisfied with the purchase...

Bought the dimmer for my son's new 15 watt (tungsten) Ikea nightlight, which was proving far too bright. It dims the lamp to a fraction of the level it was before, so we're very pleased as he's sleeping again. The response from control is very linear. Like many dimmers, if switched on (when set to a very low setting) it needs turning up a little for the lamp to light, and then can be dimmed down a lot more. That said, we've left it set at a very low glow and it comes on every time the lamp is switched on. Things to know that aren't in the product description: -The dimmer is rated at 20 watts minimum (but ours works fine with a 15 watt lamp). -Works with mains tungsten or mains halogen lamps. -You must not plug in a compact florescent lamp unless it's designed for dimming - possibly the cause of the one in Mark Rennie's review dying. -You must not plug in a transformer (low voltage) halogen lamp, again could kill the dimmer. -You shouldn't plug in a low voltage halogen with an electronic transformer, unless it's designed to work with a dimmer - possibly the cause of the non linear control and flickering in N N S Waller's review. - The dimmer has an internal 2 amp fuse. Highly recommended for childrens' nightlights!

It is important to check the compatibility of the light that you attach to it.

this is quite useless. Sometimes everything working fine, then all of a sudden the light starts flickering, which is dangerous for my light, it can burn it. It is not worth it, there are better ways.

I would like to return the item because we live in Australia and does not work

price is very high considering the low quality

It’s not good at all