Does this device have an alert when the batteries need to be replaced?

Thank you very much for your interest in our HENDUN power failure alarms. It has a low voltage alert function. Beeps “Du-Du” sound every 30 minutes when battery-voltage is lower than 3.6V. Please change the batteries in time or use rechargeable batteries.

How does this plug into "any 240v outlet" when 240v has a different prong configuration. Is an adapter included?

Thank you very much for your interest in HENDUN power failure alarm. The plug of the alarm is shown in the video. If it can't plug into 240V outlet directly, please use it after plugging in the converter on 240V outlet first. The adapter is not included. Thanks again.

Will this alert your phone, if outlet trips?

Thank you very much for your interest in HENDUN power failure alarm. When the outlet trips, only the local alert will be sent, and the mobile phone cannot receive the alert.

It states the working temperature is from -23f - about 15f. texas garages can be over 100f in the summer time. what is the real working temperature?

Thank you very much for your interest in our blackout alarms. Because of our mistake, the working temperature was described wrongly, it should be: 14 ~ 140℉

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Hendun Power Failure Alarm ,Gfci Circuit Failed Dector Alerter

Hendun Power Failure Alarm ,Gfci Circuit Failed Dector Alerter

Product ID: 495236423

Details

Brand
HENDUN
Color
Blue Green Red
Compatible Devices
[Inferred] in
Power Source
Battery
Product Dimensions
2.3"L x 2.3"W

🌈Tri-color LED voltage indicator

🔊108 dB loud alarm

🔋2 years standby battery life

₨629

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Seychelles.

Secure transaction

Description

⚡ Never be left in the dark—power protection that speaks volumes!

SMART VOLTAGE MONITORING - Real-time LED voltage status keeps you informed of normal, high, or low voltage conditions at a glance.
INSTANT POWER OUTAGE ALERTS - Stay ahead with a piercing 108 dB alarm and vibrant tri-color flashing lights that never let you miss a beat.
LONG LASTING BATTERY BACKUP - Powered by 3 AAA batteries, enjoy up to 2 years standby and 72 hours of continuous alarm during outages.
EFFORTLESS PLUG PLAY SETUP - No electrician needed—just plug into any 100-240V socket and protect your critical devices instantly.
VERSATILE APPLIANCE PROTECTION - Safeguard everything from freezers and sump pumps to CPAP machines and aquariums—because every device matters.

The Hendun Power Failure Alarm is a compact, battery-powered device that plugs into any 100-240V outlet to monitor power supply with a loud 108 dB alarm and tri-color LED voltage indicators. Designed for easy installation, it provides up to 2 years of standby time and 72 hours of continuous alerting, protecting critical appliances like freezers, pumps, and medical devices from power outages and voltage irregularities.

Specifications

ASIN	B0BFPJKZXG
Audible Noise	108 db
Battery Description	Alkaline
Best Sellers Rank	#59,571 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #95 in Circuit Testers
Brand	HENDUN
Built-In Media	Detector
Color	Blue,Green,Red
Compatible Devices	[Inferred] Devices mentioned in product description
Control Method	Touch
Customer Reviews	4.5 4.5 out of 5 stars (365)
Item Dimensions L x W x H	2.3"L x 2.3"W x 2.8"H
Item Highlight	Smart Power Outage Reminder for Freezer in Garage
Manufacturer	Changzhou Hengdun Electronic Technology Co Ltd
Mfr Part Number	hnfpa
Model Number	hnfpa
Mounting Type	Tabletop Mount
Number of Batteries	3 AA batteries required.
Number of Items	1
Power Source	Battery Powered
Sensor Technology	Voltage Sensor
Size	2.3 inches x 2.3 inches x 2.8 inches
Unit Count	1 Count
Voltage	240 volts

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

₨629

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Seychelles.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews