MK Logic Plus

[ldoodle]

First, I wasn't sure if this was best placed in the Tools and Materials forum, so feel free to move if so.

I love MK's Logic Plus range of accessories, but what is their justification for a massive uplift for a twin socket with USB ports.

This is the cheapest I've found it: http://www.electricpoint.com/mk-log...gle-shopping&gclid=CLLZo5259scCFcSRGwod5-sJFg

Their non USB twin socket is £20 less! And most other brands with USB seem to be 50% less than MK's one.

Are MK doing it differently (in a much superior way) that justifies the cost? I only want a couple for various locations so it's not like I'm changing the whole house. So really I'm stuck with getting MK to keep them the same as existing.

Thanks!

 

[bernardgreen]

The MK USB sockets probably have a well designed and 99% safe design for their 230 to USB power convertors with isolation between USB and mains. Unlike some of the "cheaper" ones which, in the worse seen so far (*), can have the 0 volt of the USB connected to the Neutral of the mains. If ( when ) the pulse width modulating transistor between Live and USB 5 volt out fails to short circuit the 5 volts USB becomes 230 volts AC. This could be detrimental to equipment powered by the "USB" supply when the device fails. No isolation whatso ever.

(*) they were spotted and the entire shipment siezed and cushed.