It's a beaut; same as an Extech EX540:
http://www.extech.com/instruments/product.asp?catid=48&prodid=530
If that instrument had a Fluke badge on it, it would probably cost around the £400 UK mark
I would like to know who the OEM (Own Equipment Manufacturer) is. I'm not sure that Extech are the OEM. If you come across any clues could you post. I suspect Brymen, who would be the most likely, but your multimeter differs from any of their models. It could be a special though. If you are back at the Jaycar store anytime could you see if they know?
By the way, you can get manuals, software updates, etc from the Extech site.
Innovation Awards
EC&M 2010 Product of The Year Award
Extech's revolutionary EX540, a waterproof/dustproof, CAT IV wireless datalogging multimeter has been selected as the
2010 EC&M Product of the Year Category Winner for the Portable Measurement Equipment category. According to EC&M magazine, 99 products were evaluated by a panel of judges representing electrical engineers, contractors, and plant facility personnel.
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