SonewSmart Power Failure Alarm, 120db Home Security LED Indicator, Battery Powered, 9V, for Home Security Systems, Backup Alarms

This is very loud, just what I was looking for! This is a MUST if you have a freezer in the garage. If you can't hear this inside the house, get your hearing checked! 😉

Very simple device. Nothing more to say.

Atypical 9-volt connections. Product is extremely cheaply made. Not UL Listed. No English description or instructions anywhere.

The battery polarity marking is wrong and the alarm volume is way too loud.

It didn’t work when we lost electricity the other night.

Bought this for use in a mobile home. Worked perfectly but the alarm is ear splitting! Actually painful!

I have not had an experience with this alarm. The packaging was very cheap and there were no instructions in English. It was covered in Chinese words or symbols that I couldn’t read. The battery compartment is very flimsy.

It is very loud and shrill. Needs a controller for the volume.

Excelente relación de calidad y precio

Works perfect, very loud

Me gustó que es súper ruidosa. La uso porque tengo un respirador cpap y así me entero si me quedo sin luz. No se cuánto dure las baterías pero si me avisó ya un par de veces.

We HAVE TO know if there is a power failure in the Spring, because if our sump pump does not run our basement would flood. It's a great heads up to quickly get our generator going.It operates exactly as it should. Love it & price is GOOD for our peace of mind.

The power went out and it worked.