Power Failure Alarm WiFi, Smart Power Outage Alarm with App
Quick take
This WiFi power outage alarm plugs into an outlet to detect power loss on that circuit and immediately sounds a loud 110 dB siren with a flashing red LED. It also sends alerts to your phone through the Smart Life or Tuya app over 2.4GHz WiFi, which is especially useful if you are away from home during freezer or sump pump downtime. The main caveat is notification features can involve additional subscription-related costs for certain message types.
Pros and cons
Pros
- Loud 110 dB alarm with 3 adjustable volume levels.
- Red LED flashing during an outage, helpful even if you are not holding your phone.
- WiFi alerts through the Smart Life or Tuya app, designed for anytime notification.
- Mini form factor, plus a second outlet for connecting other appliances.
- Built-in 9V battery support to keep the alert active for up to 12 hours.
Cons
- Uses 2.4GHz WiFi only, so it may not work with households that rely solely on 5GHz.
- Remote notification extras (like additional text/SMS or email behaviors) may require a subscription fee.
- Best results depend on correct placement, since the alarm detects power loss on the outlet/circuit it is plugged into.
What buyers think
Buyer-review evidence is limited but consistently points to a few practical themes. Setup is described as straightforward, and multiple reports indicate the alarm triggers during real power loss, with phone notifications arriving quickly. Buyers also emphasize the usefulness of placement on the same electrical circuit, since you do not necessarily need the appliance plugged directly into the alarm’s outlet to be notified when power drops. The loudness is repeatedly mentioned as a standout feature for catching your attention fast.
How this WiFi power outage alarm works (and when it helps most)
This device monitors whether power is present at the outlet it is plugged into. When power is lost, it triggers an alarm (with a loud siren and a flashing red LED) and pushes an alert to your phone via the Smart Life or Tuya app. This makes it a practical choice for scenarios where outages can cause damage or spoilage, especially when you are not home.
Common targets include:
- Fridges and deep freezers (to help you respond before food spoils).
- Furnaces (to reduce time without heat).
- Aquariums (to support aeration and temperature stability).
- Sump pumps (to shorten the window before water damage).
- Other plug-in critical loads on the same circuit.
App notifications and WiFi requirements
The alarm connects to your wireless network using 2.4GHz WiFi and communicates through the Smart Life or Tuya app. Reviews suggest notifications are “nearly instant,” and that you can get alerted whether you are at home or away.
Important tradeoff: while the device supports free app notifications, some additional notification methods (such as extra text/SMS and email settings) are described as subscription-based. If you want those specific delivery options, factor that into your decision.
Alarm sound, LED behavior, and battery backup
When a power failure is detected, you get immediate audible and visual cues. The siren can reach up to 110 dB, and you can adjust across 3 volume levels. A built-in battery helps keep the alarm active even after the outage, with an advertised maximum alert duration of up to 12 hours. When power returns, the alarm is intended to release automatically.
Mini design and the extra outlet
The device is designed to be compact so it does not dominate your wall outlet. It also includes an extended socket on its surface, allowing you to connect another household appliance (useful if you have a “critical” outlet plus a secondary item you still want powered there).
Setup and placement tips
Most buyers describe the setup as easy, including connecting to the app and getting it running on the first try. For best results, think through outlet placement:
- Plug the alarm into the outlet that represents the circuit you want to monitor.
- If your appliance (like a freezer) is already on that same circuit, you may still get notifications when the circuit loses power, even if the appliance is not plugged into the alarm’s extended socket.
- If you rely on a GFCI outlet for certain appliances, plan to plug the alarm into the same GFCI-protected circuit so it can detect the outage state.
Pros and cons recap
- Buy this if: you want loud local alerts plus phone notifications for outages affecting freezers, fridges, sump pumps, aquariums, or other plug-in essentials, especially when you are away.
- Skip this if: you need the alarm to work on 5GHz-only WiFi networks, or you expect all notification methods to be free without any subscription-related add-ons.
Verdict: Is it worth it?
For shoppers looking for a simple, plug-in way to reduce outage damage time, this WiFi power failure alarm has a strong practical core: immediate 110 dB audible alert, visible LED warning, and remote notifications via Smart Life or Tuya over 2.4GHz WiFi. The biggest decision factor is notification expectations, since some notification features may have subscription costs, and correct outlet placement matters because the device monitors the outlet/circuit it is plugged into.
FAQ
Does it work with 5GHz WiFi?
No. It is designed for 2.4GHz WiFi only.
Which app does it use for notifications?
It supports the Smart Life or Tuya app for phone notifications.
How loud is the alarm?
The alarm sound is rated up to 110 dB, with 3 adjustable volume levels.
Will it keep alarming during a long outage?
It includes a built-in battery, and the alarm can remain for up to 12 hours under full power before it stops, depending on use.
Do I need a subscription for app notifications?
Free app notifications are supported, but additional notification types like extra text/SMS and email settings are described as subscription-based.
Does the appliance need to be plugged into the alarm?
Not necessarily. Buyers report that placement on the same electrical circuit can still trigger notifications when power is lost on that circuit.
Specifications
| Product Title | Power Failure Alarm WiFi, Smart Power Outage Alarm with App Notifications, Mini Size Freezer Alert with Loud 110dB & LED Indicator & Voltage Detection, Home Power Monitor for GFCI Trips, Sump Pump |
|---|---|
| Category | Electronics > Security & Surveillance > Horns & Sirens |
| Brand | Satisure |
| Manufacturer | Satisure |
| Model Number | L8D |
| Product Dimensions | 1.5"L x 1.5"W x 3.2"H |
| Battery Description | Alkaline |
| Number of Batteries | 1 9V batteries required. (included) |
| Audible Noise | 110 Decibels |
| Smart Home Compatibility | Smart Home Compatible |
| Item Dimensions L x W x H | 1.5"L x 1.5"W x 3.2"H |
| Built-In Media | Power Failure Alarm WIFI |
| Noise Level | 110 Decibels |
Available variants
Style
- Power Failure Alarm - WiFi - 2 Pack
- Power Failure Alarm - WiFi
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