3-in-1 Alarm - Door Left Open Alarm, Doors Chime with Delay, 0/5/10/30/60 Seconds, 2/5 Minutes, Gate Ajar Alert, 80 to 120 dB, Close Door Reminder for Freezer, Home, Shop. (White)

Got this door alarm to alert me that door is open, originally for preventing dog from escaping. Alarm goes off after door open for a few seconds. It is not an obnoxious sound but is a persistent sound alert. Easy to install, sticks with included mastic tape. Can be made inactive easily using the switch.

Simple, easy to use and install and it works as advertised. My garage is separate to the house. I have video cameras and signage but I wanted an aural alarm to deter a bad guy (By the way, this unit does NOT connect to any wireless network. I knew that when I bought it and don't need that. Just wanted to let you know.). I chose the 5 second delay and the loudest alarm and it is very loud. I don't think a crook will hang around very long with that going off. Anyway, it works great and does everything I expected it to do. I would buy this again.

This alarm has saved us electricity by alerting that refrigerator door is not closed. The left door of our Samsung French door refrigerator has an additional sealing mechanism attached to it which requires additional force if attempting to close it with swinging it closed instead of pushing it closed. I don't know if all French door units are like this, but ours is. The sound intensity is adjustable but I keep it at mildly annoying so it can be heard in the next room since it delays for a minute before alerting. Had to move refrigerator farther away from wall an inch or two to allow opening one cabinet door above.

These are great but one of mine, the newer of my 2, randomly stopped working. My older one is still going strong though. Also the adhesive is hard to get off.

I bought this to keep my French door fully shut because it sometimes drifts open, and I’ve got a new kitten who is both sneaky and incredibly fast. The alarm definitely does its job- haven’t had a single accidental escape since installing it, and the setup was straightforward. I wish it came with a more secure method of attachment, but the adhesive is strong enough. It’s affordable which is a plus. After a few days, though, I’ve realized the alarm more annoying than expected, especially when the door doesn’t close perfectly on the first try. It’s useful and does what it promises, but the sound design could be a lot more pleasant. Three stars for function over comfort.

My wife kept leaving the freezer door open in the garage. I got this little device and it solved the issue. No more thawed out food. Love it. Happy wife happy life 🙂. Only takes a few minutes to install.

Update: it’s November 14 and the sensor has fallen off the door. I don’t know where it is because my husband probably put it somewhere. I have sent an email to the company to see if I could get a replacement for it and I will let you know what they say. I’m just wanting a sensor and the sticky part. My husband may have taken it off the door I don’t know. My husband has the beginnings of dementia so he never remembers to shut the door to the front of the house. The store alarm is excellent. It has worked every single time. There are so many settings that when he gets used to one sound, I can change it to another sound that gets his attention better. It works even if it’s not exactly lined up because of the door frame. It’s a great product and I’m definitely gonna buy another one for the back door.

Works for reminding me that I left the fridge open. Wife got mad at me for leaving it open all day.

Great - working as advertised and easy to install on my refrigerator door.

Very easy to install. It has different timer options and very loud alarm can hear it from across the house if door is left open. Life saver if you have kids!

Tal cual descripcion

Finalmente il freezer non rimane più aperto accidentalmente facendo scongelare tutto. Messo timer 1 minuto e poi inizia a suonare. Soddisfatta.

Der 3in1 Alarm mit Zeitverzögerung hat mich absolut überzeugt. Er vereint mehrere Funktionen in einem kompakten Gerät und sorgt für ein deutlich sichereres Gefühl – egal ob zu Hause, im Büro oder im Ferienhaus. Ich benutze es an der Haustür damit die Kinder nicht vergessen diese wieder zu schließen. Besonders praktisch finde ich die einstellbare Zeitverzögerung. Man hat genug Zeit, den Raum zu verlassen oder den Alarm zu deaktivieren, bevor er auslöst. Das macht die Nutzung sehr komfortabel und verhindert unnötige Fehlalarme. Gleichzeitig reagiert der Sensor zuverlässig, sobald eine Tür oder ein Fenster geöffnet wird. Die Lautstärke des Alarms ist beeindruckend – deutlich hörbar und abschreckend. Genau so soll es sein! Auch die Montage ist kinderleicht und ohne Bohren möglich. Einfach anbringen, einstellen, fertig. Die Verarbeitung wirkt hochwertig und stabil. Trotz der kompakten Größe bietet das Gerät eine starke Leistung. Ideal für zusätzliche Sicherheit – besonders auch auf Reisen oder in Mietwohnungen. Insgesamt ein durchdachtes, effektives Sicherheitstool mit sehr gutem Preis-Leistungs-Verhältnis. Klare Kaufempfehlung für alle, die unkompliziert mehr Schutz möchten! 🔔🔒