Smoke Detector Tester, 10 in. L x 9 in. W

This is a small can but it has quite a bit in it. A couple of quick blasts from a couple of feet away, maybe three, and your smoke detector will sound. I tested it with Photo type detectors in the house. Found one bad detector even though the test button worked OK, but it failed with the "smoke" test. Nice to know that I could detect this and replace it before it might be needed for real. Can does not provide specific info on the chemicals used. For what its worth, the can says it is silicon free testing, has UL and ULC markings, and a warning that it is highly flammable.

It works! I found out some smoke detectors I just purchased from another seller, not here, did not go off when hit up with the smoke, but the alarm would go off it you hit the test button. I also found out a very old smoke detector I had did work, which surprised me, but some of my other hard-wired ones I had around the house tested fine, but when you hit them up with smoke they did not go off. So what is this telling you? It says you can't rely on the smoke test button. You can only rely on the smoke.

We use these smoke detectors at my church to make sure the smoke detectors are working properly. Excellent product.

We purchased this smoke detector test spray for extra peace of mind after a close friend experienced a devastating house fire. Their smoke detectors had fresh batteries and passed the test button check, yet failed to alert them when smoke and fire started in their basement. Even after the fire, one of their bedroom detectors still tested “ok” with new batteries but did not respond to this spray—proving how important it is to properly test alarms beyond just pressing a button. The product worked as advertised, giving us confidence that our smoke detectors will respond in an actual emergency. I suppose the smoke from an extinguished candle could work for testing, but this spray is much more reliable. Plus, you don’t have to be inches away on a ladder with a smoking candle. I was able to use the spray from off to the side while standing on the floor, making it much safer and more convenient. It is a bit pricey for what it is, but considering the potential consequences of a malfunctioning smoke alarm, the cost is worth it for peace of mind. If it turns out my detectors work as the should during an actual fire I be sure to update this review from 4 to 5 stars!

Worked to test smoke detectors. Wanted to test smart smoke detector. Worked well, didn’t seem too toxic, no real smell. Didn’t die or get lung cancer.

Gave a short blast about 2 feet below my combo smoke/co detector & about 5 seconds later it alarmed. Highly Recommended!

Works Great. First Try. AFTER Reading the Directions on the Can.

works very well. Unlike burning matches and newspapers under a smoke detector is safe. A quarter of a second of pressure is more than necessary if you are using a paper or foam cup with the bottom cut off. the price is not cheap for such a small volume, but funerals cost much more. I am very pleased with the purchase and recommend it.

Great for testing smoke alarm.

perfect for semi annual inspections of rental units

Bought for work. It did the job.

Ordered thinking it was a good deal at three cans !! Got the smallest single can ever. !! Going to try and return