Briidea Power Failure Alarm with LED Indicator & 80dB Siren, Powered by Rechargeable Battery (included), Perfect for Monitoring Refrigerators, Freezers, Sump Pumps, Aquariums

Our garage freezer is on a GFI circuit and it “popped” recently and we didn’t notice it for a few days, so almost everything was ruined. This gadget screams annoyingly loud if the freezer (or whatever) loses power. I’ve tested it and it works great.

We have a grinder pump that I'd like to know if it ever loses power so I purchased this. It's VERY loud but kind of fussy messing with it. Wish buttons were more clear on what they mean (charging vs on and ready) but for something I'll never mess with, it's fine

Definitely works. There is a screamingly loud sound when the power goes out.

Needed an alarm for our freezer to let us know if the outlet is tripped. This has worked very well for us and did alert us to an outage. It is loud enough to hear a floor away and is simple to install.

Has tripped and saved my freezer multiple times

Save your money on this one. The alarm is not loud enough to wake up a baby, the battery will not stay charged sufficiently, therefore the unit will not work as you think it would. Total waste of money. Point being, if you can't hear the alarm, even if it is going off, which it might not with a dead battery.

I like these and thought they'd be so helpful I bought 2. I've found they are as helpful as I expected.I seldom do much with wiring around the house. Who does? But, we recently moved out of our empty nest and into our 'forever house'. As is so typical, the main circuit breaker panel in our new home was poorly labeled. I, however, like to be certain which outlets, switches, and fixtures are controlled by which breaker. To top it off, shortly after moving in, we underwent a pretty serious renovation costing nearly $ 200K, which included upgrading to 200 AMP service along with a few new circuits and the obligatory new electrical panel, located in the unfinished basement.Regrettably, the electrician did minimal labeling of the new panel, e.g. 'living room'. Despite the labeling, after the electrical work was done, I found that not all outlets and switches in the 'living room' were on the same circuit.To remedy any confusion, my plan was/is to draw diagrams of each room showing each outlet, switch, and fixture, and keep those diagrams attached to the circuit panel for future reference.These little alarms were a BIG help in my plan. I'd put 2 in a room, then go to the basement and hit circuit breakers listening for the telltale alarm, then return upstairs and update the diagram for that particular room. It's a time-consuming process, but I can do it when my wife isn't home and without interrupting cooking, laundry, or any other activity that requires a live circuit.I haven't yet finished the diagramming and testing, but I do pick away at it slowly. (My wife goes out less often n the approaching cod weather).I told a friend about these and he ordered one for himself. (He could have borrowed mine, but he lives too far away to easily trade back and forth).These were helpful in my project, and I'm sure could be helpful in others.

You need one of these if you have a deep freezer or refrigerator. If the power goes out because someone in your house trips the GFI switch on a plug connected to the freezer, you may never know your freezer has been off for hours or days. With this device, you will know instantly when your freezer loses power, and you can attend to it before it is too late.