FRIDGGI 3-in-1 Alarm (door left open, delayed chime, gate ajar reminder)
Quick take
The FRIDGGI 3-in-1 Alarm is a contact-sensor door ajar reminder that you can mount with adhesive strips and run on two AAA batteries. It lets you choose how quickly it starts alerting (including delayed chime style modes) and how loud it gets, up to 80 to 120 dB depending on the tone level you select. If you want something discreet, note that when it does trigger it can be persistent, so it may not be ideal for every gate or personal-use scenario.
Pros and cons
Pros
- Adjustable alert timing and repetition, with modes that range from instant to several minutes.
- Multiple sound options, with 3 chime tone levels and 3 siren levels (80 to 120 dB range).
- Adhesive mounting plus included batteries, designed for quick setup on flat surfaces.
- Includes a low-battery alert so you know when it is time to replace the AAA batteries.
Cons
- Not smart home compatible (it is an alarm, not a connected device).
- Can be loud and may feel “ongoing” while the door remains ajar, depending on your chosen mode.
- Best gap detection depends on correct placement, with guidance to keep mounting alignment tight.
What buyers think
Buyer feedback emphasizes that the alarm behavior matches the expectations set by the adjustable delay and tone choices. Several shoppers highlight easy installation with the included adhesive, and they like being able to tune the alert loudness so it is noticeable but not necessarily unbearable. There is also limited but consistent feedback that the device is effective at reminding about doors left open (including sheds and pet-related use cases). At the same time, at least some buyers find the sound level or reminder cadence too aggressive for specific gate situations, so choosing the right mode and volume matters.
How the 3-in-1 alarm works
This is a battery-powered door ajar alarm that uses a contact sensor style trigger. When the door or gate opens beyond a small gap threshold, the unit starts its chosen alert routine. You can configure:
- Delay before alerting: from instant alert options up to multi-minute delays.
- Repeat pattern: how often it reminds while the door stays open.
- Sound character and loudness: chime tones or siren tones, with different dB levels.
That combination is the heart of the “3-in-1” idea, since it lets you set a gentle door reminder, a delayed entry-style chime, or a more direct alarm response depending on the room or doorway.
Modes and sound levels, explained simply
Instead of one fixed alarm, you get multiple alert styles. The modes are designed around both the wait time and how frequently it repeats while the door is ajar.
Typical use-case fit for each mode range
- Quick reminder modes (seconds to about a minute): geared toward everyday doors or gates where you want a short grace period.
- Longer delay modes (a couple minutes to 5 minutes): suited for storage areas, workshops, sheds, or commercial spaces where doors may be opened while you work.
- Instant mode: for immediate chimes or anti-theft style reminders (useful when you do not want a grace period).
Chime vs siren volume
You can select chime-style tones or siren-style alerts, with a listed loudness range of 80 to 120 dB. A practical way to think about it: chime settings can help you stay aware without sounding like a full alarm every time, while siren settings are better for louder environments where you need to cut through background noise.
Installation and everyday usability
The unit is designed to mount on a clean, flat surface using included adhesive strips. It runs on two AAA batteries (included) and includes a low-battery alert that uses continuous low beeps when it is time to replace them. Setup also includes alignment guidance so the sensor gap detection works reliably. If the mounting is off, you may end up with less predictable triggering.
Who this is best for
- People who want delayed door reminders: for entry doors, interior doors, or back doors where you want time to come and go without constant alerts.
- Homes with kids, pets, or caregivers: when you want an extra layer of awareness if a door or gate is left open.
- Workshops, sheds, basements, and laundry rooms: when you want the flexibility to use longer delay and repeat intervals.
- Buyers who prefer simple, non-connected security: no apps or smart home hub required.
Who should avoid it (or choose a different setup)
- If you need smart alerts: this is not smart home compatible, so it will not send notifications to your phone.
- If you want a very quiet reminder: the device can reach loud levels, and some modes can be persistent while the door remains ajar.
- If your mounting surface or placement cannot be aligned well: contact-sensor style alerts rely on correct placement and small gap tolerances.
Pros and cons recap
- Best strengths: configurable delays, repeat behavior, and adjustable chime versus siren loudness, combined with adhesive installation and battery operation.
- Main tradeoff: depending on the mode and volume you select, the reminder may feel too loud or too frequent for certain gates or personal spaces.
Price and availability
The current price can vary, but this is generally positioned as an affordable add-on for door ajar awareness rather than a full security system. For the most up-to-date pricing and shipping options in your area, check the latest listing.
FAQs
How loud is the FRIDGGI 3-in-1 Alarm?
It supports multiple tone options, with listed loudness levels in the 80 to 120 dB range depending on whether you choose chime tones or siren tones.
Does it work with a smart home app?
No. It is not smart home compatible, and it operates as a standalone battery-powered door ajar alarm.
What kind of installation does it use?
It is designed for surface mounting with the included adhesive strips. Proper alignment is important for reliable triggering.
Does it include batteries?
Yes. It requires two AAA batteries, and the batteries are included.
Can I set it to delay the alert so it does not go off immediately?
Yes. The alarm includes modes with different delay times (including quick reminders, longer delays, and an instant option), plus repeat intervals while the door stays open.
Will it stop once I close the door?
Designed modes include automatic stop behavior after a set time or when the door is closed, so it is meant to reset once the doorway is secured again.
Specifications
| Product Title | 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 Home, Office, Shop. (White) |
|---|---|
| Category | Electronics > Security & Surveillance > Home Security Systems |
| Brand | FRIDGGI |
| Manufacturer | Fridggi |
| Model Number | Fridggi-125691 |
| Color | White |
| Size | 2.2 cm x 4.2 cm x 9.7 cm |
| Item Weight | 0.22 Pounds |
| Product Dimensions | 0.87"L x 1.65"W x 3.82"H |
| Power Source | Battery Powered |
| Compatible Devices | Smartphone, tablet |
| Battery Description | Alkaline |
| Number of Batteries | 2 AAA batteries required. (included) |
| Voltage | 3 Volts |
| Control Method | Touch |
| Audible Noise | 120 Decibels |
| Mounting Type | Surface |
| Maximum Range | 1 Centimeters |
| Sensor Technology | Contact Sensor |
| Smart Home Compatibility | Not Smart Home Compatible |
| Item Dimensions L x W x H | 0.87"L x 1.65"W x 3.82"H |
| UPC | 605928125691 |
| Mfr Part Number | Fridggi-125691 |
| Unit Count | 1.0 Count |
| Item Type Name | Door Ajar Alarm |
| Built-In Media | Door Ajar Alarm, 2x AAA, Adhesives |
Available variants
Color
- White
- Grey
- Black
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