Inexpensive but works.
585852
I have purchased three of these over the years.  They have always worked perfectly on my flat-to- M4geries.
3537994
Great price. It works for what it is needed.
1807402
Inexpensive and works. Broke a little on the second day but did get dropped.
3021626
For the price not bad it does what I needed it to do.
It may not be the most expensive one out there but it works well.
3181682
A little flash light like but it works for the price.
1994088
For the price it works. Though not all functions for my particular model. But it beats the price for a replacement (80 or so from the manf.)
1049628
you cant expect much for the price. but it works. the caps are not as tight as you would hope. but like i said for the price you cant go wrong, i needed a cheap SDHC card reader and this is just that. i would have no problems ordering more if needed.
2353437
Sure it's inexpensive, not powerful, plastic, etc. but It's made well. Works well and will do what I need it to do.
1852497
Simple and inexpensive. Works fine. I actually used it temporarily on a tv that was heavier than recommended. It was a bit shaky but was ok.
4245976
Cheap, but you get what you pay for. It works well enough for the few times I actually need it.
1352775
Works as expected.  Didn't  work at first so I opened battery compartment and removed plastic film. Wasn't in the instructions, but it's  the first logical step to troubleshoot cheap electric gadgets. Worked fine after that. Occasional the yellow button gets misaligned and slides back into unit, but it's  easy enough to put it back into place. It's  a small plastic square with a button. It's  cheap, and it does what it's  supposed to do.
3212123
It works. I was able to resurrect an old manual flash from the back of my camera cabinet and use it as an optical slave. I put this device on the bottom of my old flash and then put the foot of this into an inexpensive plastic flash stand. It fires reliably. Now I have another remote slave!

Pros:
* Inexpensive
* It works
Cons:
* The foot on the bottom is clearly meant to fit into a classical shoe mount. The problem is that it's too thin vertically and wobbles around in the shoe of my flash stand. I found that a paperclip can be wedged underneath the foot of the device, between the device and the stand's shoe to make things a bit more solid.
1238850
Inexpensive and works perfectly.  What more could you ask for?
1092886
Simple, works as advertised cheap, what more do you want?
760508
It works.  Not much else to say.  I'd buy one again if necessary.
1148431
It works as intended.  Nothing special but it does work fine.
3379267
What can I say? It works. It works well. Installation was a snap and the price is under $20.