How do you know that it is in fact working - what are the signs/proof that it is working?
1724161
Cup your hand over it for a few seconds while pluged in. You should be able to smell the ozone in your hand when u remove it
1724162
You can smell it, to me it lasted a few months only ( less than 3 ). When it is plugged in the air in the car smells like when you are standing next to a waterfall, like clean air.
956120
Best I can tell it is genuine. I've had it installed for 3 weeks and it has been working properly.
1237546
Yes. It is working well. I installed even without supporting at the end and still working. I recommend it.
27296
It's working really well. I have changed for 3 months and I couldn't find anything wrong. I believe it's working well so far.
2178137
It will tell you if it will work or not. or if it is compatable. I hope that this helps you.
1347148
No it does not. It seems to always work so I guess you just have to trust that it is.
112142
Hi. I have not used them enough to tell. Also, I cannot tell even if they are working. I need info also or will return them sorry. Michael
1192162
Thank you for your question. It is unable to provide accurate your answers if you do not try to look the goods, suspected defective product will be considered as long as it does not work. Person of the seller or do they issued what kind your answer? It is thought whether wise to have you contact the manufacturer from the seller. Sorry it can not be accurate for your answer.
590154
It is like magic. It works after you complete the installation. The force from the system makes it work.
989354
For me, the beep tells me the device is working. If I did not hear that noise, I would probably wonder if it is working,.at all.
2256770
Trust that it is working.. This is actually a very old and time tested technology inside the unit. You know those little bags of silica gel you find in some products? This is a big case packed with them. Silica gel absorbs water and with some added (chemicals) magic turns color. The water is "baked" back out of it via a heating element in the unit. If you plug it in, and it gets quite warm.. the unit is working. There are no moving parts.
112144
Hi. I have not used them enough to tell. Also, I cannot tell even if they are working. I need info also or will return them sorry.Michael
1847188
When it is turned on, it flashes at 2 second intervals so you know it working. When a hot connection is encountered it has a continual beep and a steady glow. The Fluke tends to be more sensitive and accurate in my opinion. It has earned my trust.
393865
That was the same question I had when I first got it. There are no lights that indicate the "status", you just have to look at the crystals thru the small clear observation window and compare them to the three colors on the chart above the window. It's not sophisticated, however it does give an approximate indication as to the humidity levels surrounding the device. I tested it by putting it into a bathroom when the hot shower was on and the crystals turned pink in color. I plugged it in, the crystals turned blue and the unit was warm to the touch. I put it in the safe and checked it occasionally and it appears to do what it is intended to do. Just my opinion. That was the same question I had when I first got it. There are no lights that indicate the "status", you just have to look at the crystals thru the small clear observation window and compare them to the three colors on the chart above the window. It's not sophisticated, however it does give an approximate indication as to the humidity levels surrounding the device. I tested it by putting it into a bathroom when the hot shower was on and the crystals turned pink in color. I plugged it in, the crystals turned blue and the unit was warm to the touch. I put it in the safe and checked... » Read More That was the same question I had when I first got it. There are no lights that indicate the "status", you just have to look at the crystals thru the small clear observation window and compare them to the three colors on the chart above the window. It's not sophisticated, however it does give an approximate indication as to the humidity levels surrounding the device. I tested it by putting it into a bathroom when the hot shower was on and the crystals turned pink in color. I plugged it in, the crystals turned blue and the unit was warm to the touch. I put it in the safe and checked it occasionally and it appears to do what it is intended to do. Just my opinion. « Show Less
1258077
No. It really only tells you that it is active. I only notice the lights when I trigger the flash. They pop on momentarily...I guess signaling that it is active.
1818257
Ours is still working. Sorry I can't help you, but you might try checking the reviews to see if someone else had that problem and the responses they got.
1446152
Not sure... But I bought this and discovered there is No Light or Sound Indicating its on or even working..You will never know for sure whats happening or working or batteries are kaput.A bit disconcerting at best. :)