<div dir="ltr"><div><div><div><div>Volker,<br><br></div>Like it or not NZ has a free trade agreement with the country from where this device is sourced. What this means for electrical safety is spelt out here:<br><br><a href="http://www.chinafta.govt.nz/5-FAQ/#Electrical">http://www.chinafta.govt.nz/5-FAQ/#Electrical</a><br><br>"The FTA contains an agreement on the mutual recognition of conformity
assessment for electrical and electronic equipment (EEEMRA)"<br><br></div>The company that designs and manufactures these things (Xiaomi) is valued at 15x more than NZ exported in total last year. I suspect that a company of that size investing in the manufacture of such devices for world wide export knows a thing or two about electrical safety, and cares deeply for their reputation. Never the less the device will get a thorough inspection before it goes into service even though it has a CCC mark of approval.<br></div><br></div><div>Unlike some similar devices this particular device preserves the earth connection between plug and socket. I am also concerned about the isolation of the USB connection and fire.<br><br></div><div>There are other similar devices widely available that I would not use because the ground connection is allegedly not preserved between plug and socket:<br><br><a href="http://www.aliexpress.com/item/Orvibo-S20-Wifi-Power-Smart-Socket-Timer-Switch-Wall-Plug-Cell-Phone-Wireless-Remote-Control-EU/32308708591.html">http://www.aliexpress.com/item/Orvibo-S20-Wifi-Power-Smart-Socket-Timer-Switch-Wall-Plug-Cell-Phone-Wireless-Remote-Control-EU/32308708591.html</a><br><br><a href="http://www.aliexpress.com/item/Free-shipping-Broadlink-SP2-Smartphone-Phone-Wireless-Remote-control-socket-power-supply-by-wifi-ir-RFfor/1694526057.html">http://www.aliexpress.com/item/Free-shipping-Broadlink-SP2-Smartphone-Phone-Wireless-Remote-control-socket-power-supply-by-wifi-ir-RFfor/1694526057.html</a><br><br></div><div>Interestingly I found information that suggests the UK variants may preserve the ground connection.<br></div><div><br>During the last 10 years I have had two electrical devices blow up
on me. One was bought in Bunnings NZ and came from China. The other was
manufactured by Philips in Holland and bought in the UK. Both had dramatic failures in mains
connected capacitors. Based on my small sample I can't base an electrical safety argument on country of origin or country of purchase.<br><br></div><div>When this neat little remote controlled mains socket gizmo arrives I'll bring it along to a meeting so that everyone can have a look.<br></div><div><br>Richard<br></div><br><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Apr 5, 2015 at 9:02 AM, Volker Kuhlmann <span dir="ltr"><<a href="mailto:list0570@paradise.net.nz" target="_blank">list0570@paradise.net.nz</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Sat 04 Apr 2015 09:50:17 NZDT +1300, Richard Jones wrote:<br>
<br>
> However it might be<br>
> simpler, cheaper and safer to crack the protocol of a device like this:<br>
><br>
> <a href="http://www.aliexpress.com/item/Original-XiaoMi-Smart-plug-WiFi-Phone-Wireless-Remote-Control-Smart-Socket/32266632483.html" target="_blank">http://www.aliexpress.com/item/Original-XiaoMi-Smart-plug-WiFi-Phone-Wireless-Remote-Control-Smart-Socket/32266632483.html</a><br>
<br>
You said you care about electrical safety. What makes you think this<br>
particular product is electrically safe? The USB port that is. You could<br>
of course always make it safe by filling it up with hot glue.<br>
<br>
Incidentally it's one of the few multi-socket thingemies that has a safe<br>
socket design and is therefore permitted to be imported into New<br>
Zealand.<br>
<span class=""><font color="#888888"><br>
Volker<br>
<br>
--<br>
Volker Kuhlmann<br>
<a href="http://volker.top.geek.nz/" target="_blank">http://volker.top.geek.nz/</a> Please do not CC list postings to me.<br>
<br>
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