I've used the ones B&Q have sold for 6 years, tried the Maplin ones and a couple of others. They ALL, without exception fail on an inductive load of 2A (0.85 PF - anything lower than 0.8 causes the contacts to weld shut instantly) which is quite obviously less than the 3A inductive they are supposedly rated for. What's interesting is that they all have the same failure mode - the faulty unit will initially appear to have a control fault as it will turn on and off regardless of which "channel" button is pressed. A day or so later the contacts will weld shut. Totally repeatable across all the "different" models various places sell - despite the units claiming to be made by different companies. They're fine on resistive/PFC loads and are actually a very good idea for turning off TV/hifi kit where the socket is invariably out of reach at the back.
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Don't use on inductive loads
I've used the ones B&Q have sold for 6 years, tried the Maplin ones and a couple of others. They ALL, without exception fail on an inductive load of 2A (0.85 PF - anything lower than 0.8 causes the contacts to weld shut instantly) which is quite obviously less than the 3A inductive they are supposedly rated for. What's interesting is that they all have the same failure mode - the faulty unit will initially appear to have a control fault as it will turn on and off regardless of which "channel" button is pressed. A day or so later the contacts will weld shut. Totally repeatable across all the "different" models various places sell - despite the units claiming to be made by different companies. They're fine on resistive/PFC loads and are actually a very good idea for turning off TV/hifi kit where the socket is invariably out of reach at the back.