Does it have reverse polarity protection
621659
The rather short instructions, in less than perfect English, indicate the controller is protected against "converse connections", so it does appear to provide this, but I've not tested it, and can't state with certainty its true.
1480487
You need to make sure you use it's cable like brian4698 mentioned. It is not the standard polarity, so if you use any old cable that fits, you've reversed the polarity and can do damage to the unit.
2153853
yes it's true, it has no polarity on both terminals. either ways of connections work properly.
1510637
No it does not. Go back and check your wiring you might have reversed the polarity.
934489
I'm no electrician so can't so if the polarity can be reversed by wiring. There is NO provision to allow reversing it by switch.
212011
You can plug it in either way, it is not polarity sensitive. You can not go wrong with this ths night light. We use them several places in our home. We found them once when we were staying at a strange/new/different location while traveling and really liked them and have bought 4 of them fof at home use, as well as, when traveling.
178575
Not that I know of. I used a multi-meter to get the polarity, then hooked the panel up to a charge controller.
1630283
Sorry, but I don't remember. Mine was used with a 12v DC converter for a light strip, so polarity is a definite concern
1321704
It's supposed to. In fact the CD you get with it recommends you to. But I think my unit, which I returned, broke when I tried to reverse it. I returned mine after just one day of use. It's not worth buying.
1375871
NO polarity switch. just an ON/OFF button. The glasses are the best regardless!!!
1512511
If right light is red, wiring is correct. If Left is red, it has reverse polarity. If Both are red, there is an open neutral, and if both are white, it has an open ground. I use it in my 5th wheel to check wiring at campgrounds. It has instructions right on the unit.
669568
Yes. The drill does have a reverse mode. The battery lasts a really long time and it is much more compact in size than others I considered
591496
Yes. They are regular DC motors so switching the negative and positive around will reverse the direction of the motor.
323430
No it does not, when it is on, the camera is on. No connection with your reverse connection like some wired ones have.
354313
I was using it with 18/4 wire 12v 7amp. The positive and negative stickers and and the wires were reversed on 5 or six of them.
940859
The switch is designed to reverse polarity for direct current....such as a twelve volt system....what are you working on?
462476
It's the polarity which is reversed and don't ask me to explain that. I finally gave up and started using batteries. It works fine and the batteries last a pretty long time. Good luck.