Hendun Upgraded Power Failure Alarm, GFCI Circuit Failed Dector Alerter, Smart Power Outage Reminder for Freezer in Garage, Monitor Power Cut of CPAP, Breaker and GFI/GFCI Trip Alarm

I bought this because I was worried about storms at night and the power going out while I was sleeping and my sump pump in the basement not working and flooding the place out. It’s a great for peace of mind. The power has went out several times one time at night which it did wake me up. It is loud definitely an attention getter. I highly recommend this.

This device is perfect for our second fridge.Yes it works. Power went out and I heard the the high pitch chirping (like an intrusion alarm) from our second floor. Volume can be adjusted.

I had anticipated losing our power and the affect it would have on my wife's CPAP machine; I bought an Ecoflow Delta 2 Power Station so she could run ALL the features, not just the minimum if/when we lose power. But, I never factored in how to know when the power fails. Well, 2 nights ago I found out. We had a most impressive thunderstorm (Central FL) and at 1:30am our power went out. Our UPS that is hooked up to the PC started beeping and eventually woke me. It took me a couple minutes to realize WTH was going on; I turned it off. Then I called Duke Energy. After I finished, it dawned on me that my wife had not been roused by the thunder, lightning or her CPAP machine not operating. When I nudged her she woke up startled. I hooked up her ResMed to the Delta 2 and she was good to go. But, I needed a way to be alerted to a power outage. I figured there must be some kind of alarm for that situation, so I GTS (Googled That S***). And behold, THERE IS! I chose the HENDUN Power Failure Alert. (Amazon has a pile of different brands. YMMV) I put it on the receptacle for the washing machine to test it. When I tripped the breaker, the HENDUN really let me know! There are a number of sounds to choose from; if you want annoying as all get out, it's among the choices. Volume is somewhat controllable. The ON/OFF switch is a blessing.Because I'm not concerned with losing 1 circuit but am concerned with losing power to the whole house, I'm putting this in a receptacle that will alert any and all residents in the house.BTW: CPAP is listed among the "Applicable Scenarios". It says, "…gives you a timely alert to prevent any damage or loss that breaks your heart". This made my wife chuckle.

I’m using this with my solar generator. I don’t have to keep a close watch on my batteries. If they drop to zero I can be notified and switch to grid.

I purchased this to notify us if the power is ever disrupted to our water purifier. The purifier is plugged into a GFCI circuit. We've never had any issue with the GFCI tripping but wanted this alarm "just in case" as we'd not know that it's not powered. About one day after plugging the alarm into the same outlet as the purifier it has tripped the GFCI multiple times, with nothing more than a VERY faint beeping -- which couldn't be heard unless we actually open the doors to the storage room where the purifier is located. Each time it tripped the circuit we reset the GFCI, and sometimes within hours the circuit would trip again. I had great hopes that this product would notify us of any outage -- but it seems to be CAUSING outages in our situation. I might add that our home is new construction with all new circuitry, and we've never had any problems before this. Sadly, I can not recommend this product.05/2024 -- I want to update my review. Even though I'm disappointed that this alarm isn't working in our situation, I want to commend their customer service for dealing with the situation. Our home is brand new construction, with 'smart/self-testing' circuitry. So I don't understand why our situation is unique. However, their customer service has been great.

Okay this is worth it’s weight in gold.

I'm blown away by the Hendun Upgraded Power Failure Alarm.I was skeptical at first, but this thing has been a game-changer for me. As someone who's had their fair share of coming home to a dead fridge, I can confidently say that this device has saved me from more than one potential disaster. It's ridiculously easy to set up and the smart alert feature is super reliable. I've had it for a while now and it's worked flawlessly, especially during a brief power outages. The fact that it can detect GFI/GFCI trips and breaker issues is just the icing on the cake. Highly recommend this to anyone who wants to avoid the hassle of a dead fridge or CPAP machine. Trust me, it's worth every penny! I'm really glad I made the purchase.