Product: Ketofa 12V 24V Male Car Cigarette Lighter Socket Plug Connector On Off Switch 3m
Overall sentiment: negative
Customer reviews:
Had issues using it work my air pump, melted. 
 Great idea, poor quality. I have a similar setup on a 12V light I bought from Northern Tools. So I was glad when I saw this on Amazon to use with other 12V lights. Spliced it in and worked great...for three times...Wasn't sure if my light fixture or this connector was bad. So I snipped off this connector and spliced in a different one. Sure enough, the connector was bad. Can't return it since I cut the wire. It's only $7 so no biggie but still, money down the drain. Had three more on order, quickly cancelled before they shipped. 
 Junk 
 Didn't order this! 
 This plug was too loose in our car outlet.  We actually tried it in 3 different vehicles and it was loose in all of them.  The plug constantly lost connectivity.  The push button operation is a very cool feature but doesn't matter much when it's not getting power. 
 Worked for five to ten minutes then didn't work.  Piece of junk.  Also took forever to get to me. 
 I ordered 3 of these. The adapter charges, but the light burned out on the first one right away.
2nd one after 20 hrs the lights start to flicker when on. 3rd charger is in use and needs to be proven.
The point of having the red light indicator, is so that I know its on, and my computer fan is cooling the unit.
Needles to say my computer got very hot during my many hours of usage. vote if this is helpful plz 
 Not satisfied with this product. After a few plugs and unplugs, the tip came off and got stuck inside my outlet. It took an hour to get it out with needle nose pliers. The plastic that it is made from is very soft which made it easy for the tip to strip off. It worked just as I wanted it to until it broke. I received the product for free or at a discount. 
 Caught fire 
 Burns up 
 Cheaply made. Didn't last. 
 Functional but barley... It don't always stay on and sometimes I have to press multiple times to make it stay on 
 garbage.i bougt three but only one is working.the other two were defective from inside the bag from day one.shame at you amazon to sell this garbage. 
 Piece of junk. I used it to power LED spotlights I put on the roof of my truck. Since the lights were temporary, I wanted a temporary switch.

It was temporary, alright. The inside walls of the plug melted (possibly from the initial spike drawn by the LEDs), causing the button's spring to get stuck and the button not to work.

I don't care if they sell this for $0.99! It'd be a waste of $0.99!!! 
 Ordered two but only received one. 
 Tiny super low amp wires inside. Had to solder in normal wire to get it to work. 
 Does not work. Unable to disassemble without possibly breaking it to see what the problem is. 
 Great  idea  having a on/off switch but the  Quality is just not there. Didn't work for me.