I got one of these a few days ago and started working on a device handler. It is a pretty nifty device, with pretty bare bones operation. Not as many bells and whistles as the Aeon SmartStrip, but a great device.
Pairing was a little different. The manual mentions that you press "the" power button to pair, but doesn't mention which one. It is the button labeled "CH1". I had to press it on, off, on, off, etc until it paired.
This is an adapted version of my Aeon SmartStrip handler which was a heavily improved / modified version of the SmartThings github version. Some things that they didn't have in their handler are in this one as well.
- All On/Off capability by pressing the main switch button in the SmartThings app.
- Instant status reports when one of the five buttons is pressed on the strip itself.
Also, since SmartThings does not allow you to put anything but the first switch in automations and SmartApps, don't forget to use my Virtual / Physical device sync to make up for that gap!