Summary: The only good thing about this product is that the technical support is in America. I have gone through 3 of these things. The first one worked great till I decided to upgrade the firmware that I got off the ampedwireless website which turned it into a brick. The last two wouldn't pick up anything but my local router and even then it was intermittent and that is with the repeater being located no more than 15 ft away from the router.
Summary: I'm surprised how this works. I don't understand why I see many negative reviews but I went ahead to buy this after getting AP300 for inside. I bought AP600EX & this one SR600EX for the other building and installed AP first and signal was weak where I want laptop to work then added SR and signal became strong. No connection problems and it works just great. I bet those neg reviews did not use same brand to make them work or did not set them up right.
Summary: Works great. Super distance without use of a matched access point, etc. Great signal reception and repeating. Easy setup, but does use its own SSID for the repeated signal. Using with PTZ outdoor camera and is lag-free. Only question is reliability - had to re-address once when the originating signal unit (another Amped 600 but indoor) had to be re-addressed. Summary: Works great, a little pricey.