Does the remote have to be next to the alarm to switch it off, or can it be on the other side of a door and work?

You can be a short distance away. You activate it while door is closed. Then deactivate it before entering. They are a little extra security and very loud when alarm goes off

what is the width of the magnet ? My door frame is very narrow.

Thank you for your question. The alarm host size is 85mm*40mm*15mm.the magnet box size is 50mm*11mm*10mm,the distance between the two screw holes is 40mm.Generally do not need screw installation, use self-adhesive(included) will do.

Will the alarm stop sounding once the door is closed? Looking to buy something for a fire exit that people keep leaving open.

Thank you for your interest. Yes, it will stop making the sound when the door is closed. Of course you can turn off the sound at any time with the remote control.

Do the remote's control multiple alarms or is it only one remote for each alarm? If I was to order 3/4 pack could all remotes be linked to all alarms?

No they can’t be linked. It’s a kit with the door magnets and the remote as a set.

Doidf Iegvn 038 | Desertcart Macau

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

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

MOP$617

Duties & taxes included

In stock

Sold byAmazon MacauDelivered 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 Macau.

Secure transaction

Description

🔐 Stay one step ahead—secure smarter, live freer!

TRUSTED TESTED - Highly rated with 4.4 stars from 6,300+ users, proven loud and reliable for long-term home security.
SEAMLESS REMOTE CONTROL - Disarm alarms effortlessly from outside with included remote; sync multiple remotes for full household coverage.
VERSATILE SAFETY MONITOR - Ideal for pool gates, sliding doors, refrigerators, and more—protect kids, elderly, and valuables with one device.
CUSTOMIZABLE ALERT LEVELS - Choose from 4 volume settings (80-110dB) and 4 chime tones to perfectly match your security or safety needs.
EFFORTLESS DIY INSTALLATION - Surface mount design and battery-powered setup means no wiring hassle—get peace of mind in minutes.

The DOIDF-IEGVN-038 is a battery-powered magnetic contact alarm system featuring 4-level volume and chime customization (80-110dB), remote control disarming, and multi-device synchronization. Designed for versatile use on doors, gates, and refrigerators, it enhances safety for children and elderly while providing robust anti-theft alerts. Easy to install and highly rated, it’s a compact, reliable security upgrade for any modern home.

Specifications

ASIN	B078B7LBSG
Battery Description	Alkaline
Battery description	Alkaline
Best Sellers Rank	177,831 in DIY & Tools ( See Top 100 in DIY & Tools ) 137 in Home Security Door & Window Sensors
Brand	HENDUN
Colour	White
Compatible Devices	Home Security System
Compatible devices	Home Security System
Control Method	Remote
Customer Reviews	4.4 out of 5 stars 6,328 Reviews
Item Dimensions L x W x H	10.7L x 3.8W x 6.4H centimetres
Item Weight	0.1 Pounds
Manufacturer	Changzhou Hengdun Electronic Technology Co Ltd
Model Number	SF03RCD
Mounting Type	Surface
Number of Batteries	1 12V batteries required.
Part Number	SZSF03R
Power source	Battery Powered
Product dimensions	10.7L x 3.8W x 6.4H centimetres
Sensor Technology	Contact Sensor
Size	2 Count (Pack of 1)
Sound Level	80 Decibels
UPC	664248657237
Unit Count	2 count
Voltage	12 Volts

Reviews

A**N

Great little addition for peace of mind.

Had these on about a year now and really impressed, they are SO loud! We use them on our front and back door for extra peace of mind. Easy enough to put on and they've stayed on for a year and still going strong. Really impressed and definitely recommend for extra precaution, especailly becasue we have pets so we can't turn our alarm on at night so this is just nice to have and we know it will wake us up!

31.07.2025

D**K

Great alarm

Excellent value for 2 alarms

30.09.2024

M**E

HENDUN Wireless Door Alarm with RemoteIn

They work really well and they are cheap well worth the money

3.06.2024

A**A

Too loud

Gosh! Still trying how to reduce the noise especially since I’m leaving in 2bedroom

25.08.2023

N**S

Loud and ideal

These came in perfect for what I needed them for. You do how ever need to check the batteries every now and again to make sure they are still working. Came with its own fob to activate and deactivate

9.01.2024

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

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

View all Trustpilot reviews