Works as Advertised. Nice Build Quality
599008
This does the job exactly as advertised. I bought this because the thermostat built into my electric heater is horrendously inaccurate because it would pick up lots of residual heat being conducted from the heater coils to the control housing. Before, I was always too hot or too cold. This programmable outlet thermostat fixed that problem completely.

Yes, it's made of plastic, I wasn't too thrilled about that either, but it is amazingly sturdy and rigid. It doesn't feel flimsy in any way, i.e. it never feels like it is about to fall apart in my hands.

The programmable module is powered by a couple of coin batteries (similar to wall-mounted thermostats) so that the clock & the program continue to run when you disconnect it from the outlet. Very nice feature, except perhaps that the coin batteries will have to be replaced about every year or two, but that's no different from wall-mounted thermostats.

All the programming buttons are located underneath a door covering the upper half of the front face. There is a window in the door to let you still see the display when the door is closed. Programming is quite easy. You can only make a program for weekdays (M-F), and another program for weekends (Sat-Sun). You cannot program each individual day. Each program has the usual "morn-day-eve-nite" periods each for which you can set the start time and the temperature. You can have separate programs for heat and cool modes, and switching to one of those modes does not erase the program from the other mode. It does not switch automatically between the two modes, but it wouldn't need to because you would have to manually unplug your heater and plug in your air conditioner (and vice versa) anyways.

If you want to temporarily change the temperature, select the temperature with the up/down buttons, and it will hold that temperature until the next program period. If you want to hold that temperature permanently, press the "hold" button. To revert back to the program, press the "hold" button again.

There is an on-off switch on the right face that allows you to turn off the outlet permanently. (The "on" position makes the outlet run on the program). As specified by the manual, you have to keep that switch in the "off" position until you have connected both the appliance and the wall outlet, otherwise the appliance won't turn on. I don't know why they require this. It might be some kind of safety feature.

The temperature probe is located on the top edge of the back face (i.e. the face that would be facing the wall), and it looks like a thermocouple probe to me. If you know anything about thermocouples, you could modify this to have the temperature sensor mounted remotely.
3998543
Works as advertised.  Nice quality. Somewhat large size.
4943233
Works as advertised.  Sturdy build. A little tough to take the device (tablet/phone) on and off from the front seat, but over all a solid product.
4890119
Decent build quality, works as it should, VERY handy to be able to mount phone somewhere that doesn't involved tying up a hand while driving...all good.
107869
Very happy with the build quality.  This feels like a solid fan.  I am also pleasantly surprised at the fan's effectiveness, given that it's running on USB power.
91235
Works well - really happy with the build quality of this cable.  It's better than most.
1534885
Great product - works as advertised.  Very well built
1569461
Product works as advertised.  Currently have it connected to a xbox 360 and Amazon Fire TV.  It switches automatically when a new devices is turned on, which is helpful, but there is no remote so you have to push a button if you want to manually switch between devices that are "always on".  Build quality seems decent, hope it lasts longer than my last switch [different vendor].  Built in HDMI cable to connect the switch to the TV is nice, but it is a little short, so you may be a bit restricted on placement [if you wanted to place it far].
921868
Does what's needed. Used it on an airplane trip to share audio from a tablet and it worked. Build quality looks to be very good and is priced reasonable.
3903979
Very happy with the performance of this unit. Seems to work very well and build quality is very good.
3488435
Works as expected. Quiet as a mouse. And the build quality is superb.
2828938
gets the job done well, delivery was right on time.  Only used for a few days so far, but no issues at all.  Build quality seems pretty solid.
-UPDATE-
After 5+ months of non-stop use (work computer that is never shut down) this adapter has yet to fail in any way.  EXCELLENT quality for the price, highly recommend!
2192063
Works as advertised. Enough quality for occasional use - Good overall value.
4807630
Seems solid so far, although I've put it through little use.

Build quality feels sturdy.

The best part is the dual USB port, it is really handy when travelling.
491903
Better build quality than I expected. It works great. I don't use it that much, I mainly use my speakers with my computer, and just needed this guy to be able to also plug the TV.
But so far so good.
2018873
Works as advertised without breaking the bank.
447811
Cable works as described, no issues, and nice build quality.