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20 Best Alarm For Door Left Open of 2023 – Romance University

After hours researching and comparing all models on the market, Romance University finds out the Best Alarm For Door Left Open of 2023. Check our ranking below.

2,567 Reviews Scanned

Rank No. #1

3in1 Alarm - Door Ajar Alarm, Door Chime with Delay, 0/5/10/30/60 Seconds, 2/5 Minutes, Close Door Reminder, 80 to 120 dB, Time Delay Alert When Left Open for Freezer, Home, Shop. (White)

Exclusive - With the original Fridggi 3in1, enjoy up to 42 possibilities by mixing all options (7 Delays, 3 Chimes and 3 Sirens).
Mode D - Alert after 60 seconds, a reminder every 30s, auto stop after 120min or door closed (Freezer door Alarm, Basement door chime...).
Mode C - Alert after 30 seconds, a reminder every 20s, auto stop after 60min or door closed (Alzheimers, Dementia patients alerts...).
Mode B - Alert after 10 seconds, a reminder every 15s, auto stop after 30min or door closed (Alarm bypass, Patio door reminder...).
Mode A - Alert after 5 seconds, a reminder every 10s, auto stop after 30min or door closed (Baby gate, Lab door closing reminder...).

Rank No. #2

Doorsound - Freezer Refrigerator Door Alarm with Text Messages, Phone Notifications, Adjustable time delay and Volume, Chime, Close Door Reminder, Door Left Open Alarm | no hub | no Subscription

Get reliable text (SMS) messages as well as phone app notifications from anywhere in the world (unlimited phone notifications. The text messages are limited to 10 text messages per month. The device needs WiFi connection)
Set the time delay to any duration you would like. Works when the door is left open or ajar. Requires the device setup and activation via "Arka Innovation" mobile app
Adjust sound alarm duration and quiet/loud volume, including reminders and chime
Supports wide door gaps. Ideal for refrigerators doors, freezers doors, pool doors, gates, cabinet doors.
Hear announcements on Google Home speaker or integrate with IFTTT (IFTTT started requiring pro account in 2024) and access hundreds of applets Google Sheets, Slack...etc

Rank No. #3

FRIDGGI - Refrigerator Door Ajar Alarm, 60 Second Delay Low Alert, 3 Minute Loud Chime or Siren, Freezer Door Open Alarm, 4 Minute Reminders – Compact Size. (Grey)

SOFT ALARMS - Alert after 1 minute (for 2 seconds), a second alarm after 2 minutes (for 4 seconds) when the fridge door is still open or ajar.
CONTINUOUS ALARM - Alert after 3 minutes (stay 60 seconds) will help you close the fridge or freezer door in normal situations.
LOUD SIREN - Loud Mode includes an additional 110dB Siren every 4 minutes (stay 20 seconds), activate using SET Button (4 beeps confirmation).
FOUR MODES - Low (80dB), Medium (85dB), Normal (90dB with a beep every 10s), Loud (95dB, with a beep every 10s and a 110db Siren every 4 minutes).
EASY TO USE - FRIDGGI emits a low volume beep when you exceed the allowed gap between the Alarm and the mini sensor; open/close the door to check before peeling the double-sided tape.

Rank No. #4

Freezer Door Alarm with Delay When Left Open, Door Chime Window Open Alarm Close Doors Reminder Loud 120 dB for Home, Store, Office, School

【Ultra-Loud 120dB Alarm】 Deter intruders effectively with a powerful alarm audible up to 750 feet (230 meters) - ensuring safety for kids, babies, and pets indoors and outdoors.
【Simple Operation & Easy Installation】 Seamlessly switch between Door Chime, Delayed Alarm, and Anti-Theft functions - enjoy hassle-free setup without professional help.
【Mode 1 - Door Chime Function】 Immediate alert, followed by reminders every 5 seconds. Automatically stops after 30 minutes or when the door is closed.
【Mode 2 - Delayed Alarm】Alert begins 30 seconds after the trigger, with reminders every 20 seconds. Automatically stops after 60 minutes or when the door is closed.
【Mode 3 - Anti-Theft Function】 Immediate alert, the bell rings until manually turned off.

Rank No. #5

YoLink LoRa Smart Door Sensor Starter Kit: - 1/4 Mile Open-Air Range, Door Left-Open Reminders,5 Years Battery Life, SMS/Text, Email & App Alerts, Alexa, IFTTT, Home Assistant

A SMART START! Everything you need to get started: one YoLink Hub and four Door Sensors. Batteries are included and preinstalled, good for up to 5 years between battery changes. Supports 300+ devices from our full product line. Add more hubs for large homes, high-rise condo buildings, etc.
WHY PAY A MONTHLY FEE, when you can secure it for free? Self-monitor and save when you take advantage of our many ways to be notified of alarms and off-normal events in and around your home or business. See "Know Now!" for more information!
THAT WAS EASY! Installs in moments: scan the sensor's QR code, give it a name, peel off the pre-applied 3M brand mounting tape protective plastic, press the sensor and magnet to the door and frame, and you have added security to your home or business!
MORE THAN JUST A DOOR ALARM! Place a sensor on each exterior door and window to 'Protect Your Perimeter' Activate and control lighting. Place a sensor on your fridge/freezer door or lid and know if it was left open, to prevent food loss. Track activity in your home or business. Keep an eye on children and elderly loved-ones. Use the sensors to protect liquor & medicine cabinets, gun safes, storage lockers & boxes.
DOOR AJAR! Our unique Door Left-Open reminder can be used to alert you to a door or window left open too long! You define the maximum time. Use our SpeakerHub, our audio hub, to play a tone or message, alerting you when a door is opened or left open too long.

Last update on 2025-07-31 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

How Do You Buy The Best Alarm For Door Left Open?

Do you get stressed out thinking about shopping for a great Alarm For Door Left Open? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching Alarm For Door Left Open, which is why we have assembled a comprehensive list of the greatest Alarm For Door Left Open available in the current market. We’ve also come up with a list of questions that you probably have yourself.

Romance University has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Alarm For Door Left Open that you consider buying. Your questions might include the following:

Is it worth buying an Alarm For Door Left Open?
What benefits are there with buying an Alarm For Door Left Open?
What factors deserve consideration when shopping for an effective Alarm For Door Left Open?
Why is it crucial to invest in any Alarm For Door Left Open, much less the best one?
Which Alarm For Door Left Open are good in the current market?
Where can you find information like this about Alarm For Door Left Open?

We’re convinced that you likely have far more questions than just these regarding Alarm For Door Left Open, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for Alarm For Door Left Open, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible Alarm For Door Left Open. Make sure that you are only using trustworthy and credible websites and sources.

Romance University provides an Alarm For Door Left Open buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Alarm For Door Left Open currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

Brand Value: Every brand of Alarm For Door Left Open has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
Features: What bells and whistles matter for an Alarm For Door Left Open?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your Alarm For Door Left Open.
Customer Ratings: Number ratings grade Alarm For Door Left Open objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Alarm For Door Left Open.
Product Quality: You don’t always get what you pay for with an Alarm For Door Left Open, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an Alarm For Door Left Open is should be an indication of how long it will work out for you.

Romance University always remembers that maintaining Alarm For Door Left Open information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding Alarm For Door Left Open is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.

FAQ:

Q: Why do I need a left open door alarm?

A: Door-left-open alarms enable setting longer delivery times for goods and reducing them when the delivery is complete. They guard against one of the most common security intrusion events – piggybacking or tailgating. Door alarms are effective burglary protectors.

Q: Is there a wireless door left open alert?

A: A unique Wireless Silent Gate/Door Left Open Alert with an Outdoor Wireless Receiver & 12v Security Floodlight, designed to operate the Light if a Gate, Roller Shutter or Door is left Open, ideal for customers needing to know if their Gate has been left open. Need help? Wired Fire Door Positioning Alert/Alarm, notifies you if the Door is opened.

Q: When does a door alarm need to be triggered?

A: The alarm is triggered when the door or window is opened without authorization (door-open alarm) or when the door is forced open (door-forced-open alarm). There is a third type of alarm regarding door and windows that is triggered when the glass is broken but, as the functioning is slightly different, we have dedicated it a separate guide.

Q: Is there an app that will warn if a door is left open?

A: In case anyone is interested: I have modified the “Left it open” smartapp, which warns if a door or window has been left open for a specified period of time. In the original smartapp you can only select one sensor of a door or window. If you need to control more sensors, you have to create a new app for each sensor to control.

Alarm For Door Left Open