PLOJOP Power Failure Alarm with WiFi App Notifications, 110dB Power Outage Alert
Quick take
The PLOJOP power failure alarm helps protect freezers, sump pumps, aquariums, and other critical gear by sending push notifications to your phone over 2.4GHz Wi‑Fi and triggering a loud local siren (up to 110dB) with a flashing red LED. It includes a rechargeable emergency backup battery for up to 12 hours so the alarm can keep warning you during longer outages. The biggest caveat is you cannot silence it remotely after a power interruption, it needs a manual hard reset on the device.
Pros and cons
Pros
- Instant push notifications via the Smart Life or Tuya app when power to the outlet is lost.
- Dual warning approach, loud 110dB local siren plus a bright flashing LED for on-site alerts.
- Includes up to 12 hours of rechargeable backup power for outage situations.
- Plug-and-play setup designed for standard 120V AC outlets.
Cons
- Cannot be silenced remotely after an outage, it requires a manual hard reset (hold the ▲ button).
- Only supports 2.4GHz Wi‑Fi, not 5GHz networks.
- Some buyers report the built-in receptacle can be intermittent, so it may not be ideal to run sensitive equipment through the device’s outlet.
What buyers think
Buyer-review evidence is limited but points to a few consistent decision factors. Many shoppers highlight that setup and Wi‑Fi pairing are straightforward, and that the alerts are noticeably loud, with phone notifications that remain effective even when the phone is on silent. Several buyers also describe the alarm as working reliably when they test it during outages. Overall, reviews are most supportive of the alarm loudness and notification value, while giving less confidence about receptacle steadiness for certain plug-heavy use cases.
How the PLOJOP alarm works (and why it’s useful)
This is a plug-in voltage sensor alarm meant to detect when power is lost at the outlet it is connected to. When that power drops, it alerts you in two ways: a push notification through your Smart Life or Tuya app, and a local warning with a loud siren and a flashing red LED so people nearby know something is wrong immediately.
That dual approach is practical because it covers both “I am away” scenarios (phone notification) and “I am home but distracted” scenarios (local siren and LED). It is also designed to be used with typical 120V AC devices like freezers, refrigerators, sump pumps, and other household equipment where power interruptions can turn into expensive damage.
Loudness and warning visibility matter here
The siren output is rated at 110 decibels, and the device also offers three adjustable volume levels (100dB, 105dB, 110dB). Reviews frequently mention that it is extremely loud, which is a plus when you need a noticeable wake-up call during a power event. The tradeoff is simple: if you strongly prefer quiet homes, plan for the fact that an actual outage will be very hard to ignore.
Wi‑Fi and app notification requirements
For remote alerts, the alarm connects to Wi‑Fi using 2.4GHz networks only. It syncs with the Smart Life or Tuya app, and it is designed to send push notifications when the outlet loses power.
That said, as with any Wi‑Fi device, your real-world alert reliability will depend on your home network coverage where the alarm is installed.
Backup power and “what happens after power returns”
The built-in rechargeable battery is intended to keep the alarm active during an outage for up to 12 hours. When power is restored, the alarm is designed to stop automatically (the app notification and local warning are tied to the power loss event), and there is also a “Cancel” style control that can stop the alarm immediately.
However, there is an important operational detail that affects day-to-day comfort: after an outage, it requires a manual hard reset on the device by holding the ▲ button to acknowledge the event before resuming normal operation. This is intended to prevent unnoticed dismissals, but it does mean you will likely need to physically interact with the alarm if you want it quiet after a real power interruption.
Plug-and-play fit, including the built-in outlet
The alarm is compact and designed to plug into a standard 120V outlet. You then connect your device to the alarm’s built-in outlet for monitoring, so it can detect when power is lost upstream and warn you.
In practice, that built-in receptacle is convenient, but it is also the area where buyer feedback is less uniform. One review reported the receptacle can be intermittent, where moving/touching the cord caused the connected pump to cut in and out. If you plan to use it with equipment where power stability at the plug matters a lot, treat the built-in outlet as something to verify in your own setup.
Best for, and who should avoid it
Best for
- Homeowners who want both remote phone notifications and a local siren for critical equipment like freezers, sump pumps, or aquariums.
- People dealing with frequent GFCI trips, weather-related outages, or extended trips away from home.
- Buyers who can tolerate a very loud local alarm and prefer to be actively alerted.
Who should avoid it
- Anyone who needs to silence outage alerts remotely after the event, since this unit requires a manual hard reset via the device.
- Homes using only 5GHz Wi‑Fi, since it supports 2.4GHz networks only.
- Shoppers planning to power sensitive equipment through the alarm’s receptacle without checking stability first, based on limited but notable feedback about intermittency.
Price and availability
The PLOJOP alarm is positioned as a budget-friendly accessory in the alarms category, with a current listing price available on Amazon. Availability is listed as in stock for US buyers at the time of publishing.
Is it worth it? A practical verdict
If your top priority is fast outage awareness for devices that can be damaged by power loss, the PLOJOP power failure alarm checks the major boxes: it delivers push alerts over 2.4GHz Wi‑Fi, adds a very loud 110dB local siren with a flashing LED, and includes emergency backup battery power. The strongest reason to choose it is the combination of remote + on-site warning.
You should consider alternatives or be extra careful with placement if you cannot tolerate a manual reset workflow, rely on 5GHz Wi‑Fi only, or intend to run a high-stakes pump directly through the alarm’s built-in outlet without validating the physical connection.
FAQ
Does this work with 5GHz Wi‑Fi?
No. It supports 2.4GHz Wi‑Fi only.
Can I silence the alarm remotely from my phone?
After a power interruption, it requires a manual hard reset on the device by holding the ▲ button. That is part of how it ensures the event is acknowledged.
How loud is the siren?
The local siren is rated up to 110dB, and there are three adjustable volume levels: 100dB, 105dB, and 110dB.
How long does the backup battery last during an outage?
The built-in rechargeable battery is designed to power the alarm for up to 12 hours during outages.
What kind of devices is it meant to protect?
It is intended for household equipment where power loss matters, such as freezers, refrigerators, sump pumps, aquariums/fish tanks, greenhouse setups, and similar 120V AC devices.
Is the built-in outlet reliable for running a sump pump or other equipment?
The convenience of using its built-in receptacle depends on your specific setup. Buyer feedback is mixed on receptacle stability, so it is wise to verify performance with your particular cord and plug orientation.
Specifications
| Product Title | PLOJOP Power Failure Alarm with WiFi App Notifications, 110dB Power Outage Alert with LED Indicator for Freezer, GFCI Outlet, Sump Pump, and Greenhouse |
|---|---|
| Category | Electronics > Security & Surveillance > Horns & Sirens |
| Brand | PLOJOP |
| Manufacturer | PLOJOP |
| Model Number | New Failure Alarm-Black |
| Color | Black |
| Size | 3.54" x 1.93" x 1.38 |
| Product Dimensions | 3.54"L x 1.93"W x 1.38"H |
| Power Source | Battery Powered, Corded Electric |
| Compatible Devices | Freezer, Refrigerator Protection, GFCI Outlet Monitoring, Sump Pump Monitoring, Aquarium & Fish Tank Safety, Power Monitoring for Garage Equipment, Auto Drip Irrigation, Greenhouse, Emergency Monitoring |
| Battery Description | Lithium Ion (included) |
| Number of Batteries | 1 9V batteries required. |
| Control Method | App |
| Audible Noise | 110 Decibels |
| Sensor Technology | Voltage Sensor |
| Smart Home Compatibility | Smart Home Compatible |
| Item Dimensions L x W x H | 3.54"L x 1.93"W x 1.38"H |
| UPC | 717813251818 |
| Unit Count | 1.0 Count |
| Item Type Name | Power Failure Alarm with WiFi App Notifications, Smart Power Outage LED Indicator Voltage Detection, Freezer Power Outage with Loud 110dB & 3 Volume Levels, Failure Detector for GFCI Trips, Sump Pump, Auto Drip Irrigation, Greenhouse, Pond Pump |
| Built-In Media | Power Failure Alarm x 1, User Manual x 1 |
Available variants
Style
- Black
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